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International relations (1919–1939) covers the main interactions shaping world history in this era, known as the
Interwar Period In the history of the 20th century, the interwar period lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days), the end of the First World War to the beginning of the Second World War. The interwar period was relative ...
, with emphasis on diplomacy and economic relations. The coverage here follows the
diplomatic history of World War I The diplomatic history of World War I covers the non-military interactions among the major players during World War I. For the domestic histories of participants see home front during World War I. For a longer-term perspective see international re ...
and precedes the
diplomatic history of World War II The diplomatic history of World War II includes the major foreign policies and interactions inside the opposing coalitions, the Allies of World War II and the Axis powers, between 1939 and 1945. High-level diplomacy began as soon as the war start ...
. The important stages of interwar diplomacy and
international relations International relations (IR), sometimes referred to as international studies and international affairs, is the scientific study of interactions between sovereign states. In a broader sense, it concerns all activities between states—such ...
included resolutions of wartime issues, such as reparations owed by Germany and boundaries; American involvement in European finances and disarmament projects; the expectations and failures of the
League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference th ...
; the relationships of the new countries to the old; the distrustful relations between the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
and the capitalist world; peace and
disarmament Disarmament is the act of reducing, limiting, or abolishing weapons. Disarmament generally refers to a country's military or specific type of weaponry. Disarmament is often taken to mean total elimination of weapons of mass destruction, such a ...
efforts; responses to the
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
starting in 1929; the collapse of world trade; the collapse of
democratic regimes Democracy (From grc, δημοκρατία, dēmokratía, ''dēmos'' 'people' and ''kratos'' 'rule') is a form of government in which people, the people have the authority to deliberate and decide legislation ("direct democracy"), or to choo ...
one by one; the growth of economic autarky; Japanese aggressiveness toward China; Fascist diplomacy, including the aggressive moves by Fascist Italy and
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
; the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlism, Carlists, and The Rebellion ( es, La Rebeli ...
; the
appeasement Appeasement in an international context is a diplomatic policy of making political, material, or territorial concessions to an aggressive power in order to avoid conflict. The term is most often applied to the foreign policy of the UK governme ...
of Germany's expansionist moves toward the
Rhineland The Rhineland (german: Rheinland; french: Rhénanie; nl, Rijnland; ksh, Rhingland; Latinised name: ''Rhenania'') is a loosely defined area of Western Germany along the Rhine, chiefly its middle section. Term Historically, the Rhinelands ...
,
Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...
, and
Czechoslovakia , rue, Чеськословеньско, , yi, טשעכאסלאוואקיי, , common_name = Czechoslovakia , life_span = 1918–19391945–1992 , p1 = Austria-Hungary , image_p1 ...
, and the last, desperate stages of rearmament as another world war increasingly loomed.


Background


Peace and disarmament

There were no great wars in the 1920s. There were a few small wars on the periphery that generally ended by 1922 and did not threaten to escalate. The exceptions included the
Russian Civil War {{Infobox military conflict , conflict = Russian Civil War , partof = the Russian Revolution and the aftermath of World War I , image = , caption = Clockwise from top left: {{flatlist, *Soldiers ...
of 1917-1922,
Polish–Soviet War The Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
of 1919-1921, the Greco-Turkish War of 1919-1922, and some civil wars, such as in Ireland. Instead, the ideals of peace is a theme that dominated the foreign affairs of all major nations in the 1920s. British Labour leader and Prime Minister
Ramsay MacDonald James Ramsay MacDonald (; 12 October 18669 November 1937) was a British politician who served as Prime Minister of the United Kingdom, the first who belonged to the Labour Party, leading minority Labour governments for nine months in 1924 ...
was especially articulate:
"So soon as you aim at a guarantee by a body like the League of Nations you minimize and subordinate the military value of the pact and raise to a really effective standard the moral guarantees that flow from Conciliation, arbitration, impartial, and judicial judgment exercised by the body."


League of Nations

The main institution intended to bring peace and stability and resolve disputes was the
League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference th ...
, created in 1919. The League was weakened by the non-participation of the United States, Germany, and the Soviet Union, as well as (later) of Japan. It could not handle the refusal of major countries, especially Japan and Italy, to accept adverse decisions. Historians agree it was ineffective in major disputes. A series of international crises strained the League to its limits, the earliest being the
Japanese invasion of Manchuria The Empire of Japan's Kwantung Army invaded Manchuria on 18 September 1931, immediately following the Mukden Incident. At the war's end in February 1932, the Japanese established the puppet state of Manchukuo. Their occupation lasted until the ...
. Japan was censured and quit the League. This was soon followed by the
Abyssinian Crisis The Abyssinia Crisis (; ) was an international crisis in 1935 that originated in what was called the Walwal incident during the ongoing conflict between the Kingdom of Italy and the Empire of Ethiopia (then commonly known as "Abyssinia"). The ...
of 1934-36, in which Italy
invaded An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either: conquering; liberating or re-establishing con ...
Ethiopia Ethiopia, , om, Itiyoophiyaa, so, Itoobiya, ti, ኢትዮጵያ, Ítiyop'iya, aa, Itiyoppiya officially the Federal Democratic Republic of Ethiopia, is a landlocked country in the Horn of Africa. It shares borders with Eritrea to the ...
(Abyssinia), one of the two independent African nations. The League tried to enforce economic sanctions upon Italy, but to no avail. The incident highlighted French and British weaknesses, exemplified by their reluctance to alienate Italy and lose it as a counterweight against Hitler's Germany. The limited actions taken by the Western powers pushed Mussolini's Italy towards alliance with
Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Nazi Germany, Germany from 1933 until Death of Adolf Hitler, his death in 1945. Adolf Hitler's rise to power, He rose to power as the le ...
's Germany. The Abyssinian war showed the world how ineffective the League was at solving disputes. It played no role in dealing with the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlism, Carlists, and The Rebellion ( es, La Rebeli ...
. The league also could not resolve other smaller conflicts involving major European nations, such as the
Rif War The Rif War () was an armed conflict fought from 1921 to 1926 between Spain (joined by France in 1924) and the Berber tribes of the mountainous Rif region of northern Morocco. Led by Abd el-Krim, the Riffians at first inflicted several de ...
between Spain and Morocco separatists.


Disarmament

The
Washington Naval Conference The Washington Naval Conference was a disarmament conference called by the United States and held in Washington, DC from November 12, 1921 to February 6, 1922. It was conducted outside the auspices of the League of Nations. It was attended by nine ...
, also known as the Washington Arms Conference or the Washington Disarmament Conference, was a military conference called by U.S. President
Warren G. Harding Warren Gamaliel Harding (November 2, 1865 – August 2, 1923) was the 29th president of the United States, serving from 1921 until his death in 1923. A member of the Republican Party, he was one of the most popular sitting U.S. presidents. A ...
and held in Washington, under the Chairmanship of Secretary of State
Charles Evans Hughes Charles Evans Hughes Sr. (April 11, 1862 – August 27, 1948) was an American statesman, politician and jurist who served as the 11th Chief Justice of the United States from 1930 to 1941. A member of the Republican Party, he previously was the ...
from 12 November 1921 to 6 February 1922. Conducted outside the auspice of the League of Nations, it was attended by nine nations: the United States, Japan, China, France, Great Britain, Italy, Belgium, Netherlands, and Portugal.
Soviet Russia The Russian Soviet Federative Socialist Republic, Russian SFSR or RSFSR ( rus, Российская Советская Федеративная Социалистическая Республика, Rossíyskaya Sovétskaya Federatívnaya Soci ...
was not invited. The conference focused on resolving misunderstandings or conflicts regarding interests in the Pacific Ocean and East Asia. The main achievement was a series of naval disarmament postals agreed to by all the participants, which lasted for a decade. These resulted in three major treaties –
Four-Power Treaty The was a treaty signed by the United States, Great Britain, France and Japan at the Washington Naval Conference on 13 December 1921. It was partly a follow-on to the Lansing-Ishii Treaty, signed between the U.S. and Japan. This was a treaty r ...
, Five-Power Treaty (the ''Washington Naval Treaty''), the
Nine-Power Treaty The Nine-Power Treaty ( Japanese: or Nine-Power Agreement () was a 1922 treaty affirming the sovereignty and territorial integrity of the Republic of China as per the Open Door Policy. The Nine-Power Treaty was signed on 6 February 1922 by all o ...
– and a number of smaller agreements. Britain now took the lead. The successful London Naval Treaty of 1930 continued the warship limitations among the major powers first set out in 1922. The treaties of 1922-30 preserved peace during the 1920s but were not renewed, as the world scene turned increasingly negative starting in 1931.B. J. C. McKercher, "The politics of naval arms limitation in Britain in the 1920s." ''Diplomacy and Statecraft'' 4#3 (1993): 35-59.


The peaceful spirit of Locarno

The seven international treaties negotiated at Locarno in 1925 by the major powers in Europe (not including the Soviet Union) significantly strengthened the legitimacy of Germany, paving the way to its return to the role of a major power and membership in the League of Nations in 1926, with a permanent seat on its council. The Locarno Treaties marked a dramatic improvement in the political climate of western European in 1924–1930. They promoted expectations for continued peaceful settlements, often called the "spirit of Locarno". This spirit was made concrete when Germany joined the League in 1926, and the withdrawal of Allied troops occupying Germany's
Rhineland The Rhineland (german: Rheinland; french: Rhénanie; nl, Rijnland; ksh, Rhingland; Latinised name: ''Rhenania'') is a loosely defined area of Western Germany along the Rhine, chiefly its middle section. Term Historically, the Rhinelands ...
. Historian Sally Marks says:
"Henceforth the spirit of Locarno would reign, substituting conciliation for enforcement as the basis for peace. Yet for some peace remained a desperate hope rather than an actuality. A few men knew that the spirit of Locarno was a fragile foundation on which to build a lasting peace."
Nazi Germany had no use for a peaceful spirit. It repudiated Locarno by sending troops into the demilitarized Rhineland on 7 March 1936.


Outlawing war

The Kellogg–Briand Pact of 1928 resulted from a proposal drafted by the United States and France that, in effect, outlawed war to resolve "disputes or conflicts of whatever nature or of whatever origin they may be, which may arise among them". Most nations readily signed up and used the occasion to promote the goal of peaceful foreign policies. The only issue was the actual formula of the renunciation of all wars – the French wanted the definition restricted to wars of aggression, while the Americans insisted it should include all kinds of warfare. Historian Harold Josephson notes that the Pact has been ridiculed for its moralism and legalism and lack of influence on foreign policy. He argues that it instead led to a more activist American foreign policy. Its central provisions renouncing the use of war, and promoting peaceful settlement of disputes and the use of collective force to prevent aggression, were incorporated into the UN Charter and other treaties. Although civil wars continued, wars between established states have been rare since 1945, with a few exceptions in the Middle East. In the United States, much energetic grass-roots support came from women's organizations and Protestant churches.


Criminalizing poison gas

Poison gas became the focus of a worldwide crusade in the 1920s. Poison gas did not win battles, and the generals did not want it. The soldiers hated it far more intensely than bullets or explosive shells. By 1918, chemical shells made up 35 per cent of French ammunition supplies, 25 per cent of British, and 20 per cent of the American stock. The “Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous, or Other Gases and of Bacteriological Methods of Warfare” Geneva Protocol"was issued in 1925, and was accepted as policy by all major countries.


Protecting power

In the interwar period, the diplomatic role of an official
protecting power A protecting power is a country that represents another sovereign state in a country where it lacks its own diplomatic representation. It is common for protecting powers to be appointed when two countries break off diplomatic relations with e ...
was formalized in the Geneva Convention of 1929. Protecting powers were allowed to inspect prisoner of war camps, interview prisoners in private, communicate freely with prisoners, and supply books for the prison library. However, a suggestion by the
International Committee of the Red Cross The International Committee of the Red Cross (ICRC; french: Comité international de la Croix-Rouge) is a humanitarian organization which is based in Geneva, Switzerland, and it is also a three-time Nobel Prize Laureate. State parties (signato ...
that it be made responsible for ensuring compliance with the treaty was rejected.


Europe


Great Britain

Britain was a troubled giant that was less of a dominant diplomatic force in the 1920s than before. It often had to give way to the United States, which frequently exercised its financial superiority. The main themes of British foreign policy include a role at the Paris Peace Conference of 1919, where Prime Minister Lloyd George worked hard to moderate French demands for revenge. He was partly successful, but Britain repeatedly had to restrain the French regarding Germany. Britain was an active member of the new League of Nations, but repeated frustration was the main result. Politically the coalition government headed by Lloyd George, a Liberal, depended primarily on Conservative Party support. He increasingly antagonized his dwindling base of Liberals supporters by working mostly with Conservatives, and he antagonized his main base of Conservative supporters by foreign policy miscues. The
Chanak Crisis The Chanak Crisis ( tr, Çanakkale Krizi), also called the Chanak Affair and the Chanak Incident, was a war scare in September 1922 between the United Kingdom and the Government of the Grand National Assembly in Turkey. ''Chanak'' refers to � ...
of 1922 brought Britain to the brink of war with Turkey, but the Dominions were opposed and the British military was hesitant. Lloyd George's aggressive policy was rejected in favour of peace and he lost control of the coalition. He was replaced as prime minister and never held power again. Britain maintained close relationships with France and the United States, rejected isolationism, and sought world peace through naval arms limitation treaties. It sought peace with Germany through the Locarno treaties of 1925. A main goal was to restore Germany to a prosperous and peaceful state. The Dominions (Canada, Australia, South Africa and New Zealand) achieved virtual independence in foreign policy in 1931, though each depended heavily upon British naval protection. After 1931 trade policy favoured the Commonwealth with tariffs against the U.S. and others. Relations with the independent Irish Free State remained chilly, with a trade war underway in 1932-1937. The success at Locarno in handling the German question encouraged Foreign Secretary
Austen Chamberlain Sir Joseph Austen Chamberlain (16 October 1863 – 16 March 1937) was a British statesman, son of Joseph Chamberlain and older half-brother of Prime Minister Neville Chamberlain. He served as Chancellor of the Exchequer (twice) and was briefly ...
, working with France and Italy, to find a master solution to the diplomatic problems of Eastern Europe and the Balkans. It proved impossible to overcome mutual antagonisms, because Chamberlain's program was flawed by his misperceptions and fallacious judgments. Disarmament was high on the agenda, and Britain played a major role following the American lead in the
Washington Naval Conference The Washington Naval Conference was a disarmament conference called by the United States and held in Washington, DC from November 12, 1921 to February 6, 1922. It was conducted outside the auspices of the League of Nations. It was attended by nine ...
of 1921. The goal was naval disarmament of the major powers and it worked until 1933. Then disarmament collapsed and the issue became the risk of war with Germany. Britain faced a large debt of money to the US Treasury it borrowed to fight the war. Washington refused to cancel the debt but in 1923 the British renegotiated its £978 million war debt. It promised regular payments of £34 million for ten years then £40 million for 52 years, at a reduced interest rate. The gimmick was for the US to loan money to Germany, which in turn paid reparations to Britain, which in turn paid off its loans from the US government. Britain supported the American solution to German payments through the
Dawes Plan The Dawes Plan (as proposed by the Dawes Committee, chaired by Charles G. Dawes) was a plan in 1924 that successfully resolved the issue of World War I reparations that Germany had to pay. It ended a crisis in European diplomacy following Wor ...
and the
Young Plan The Young Plan was a program for settling Germany's World War I reparations. It was written in August 1929 and formally adopted in 1930. It was presented by the committee headed (1929–30) by American industrialist Owen D. Young, founder and for ...
, whereby Germany paid its reparations using money borrowed from New York banks. In 1931 all German payments ended, and in 1932 Britain suspended its payments to the US. The German and British debts were finally repaid in 1952.


Labour Party

In domestic British politics, the fast-rising Labour Party had a distinctive and suspicious foreign policy based on pacifism. Its leaders believed that peace was impossible because of capitalism, secret diplomacy, and the trade in armaments. That is it stressed material factors that ignored the psychological memories of the Great War, and the highly emotional tensions regarding nationalism and the boundaries of the countries. Nevertheless, party leader
Ramsay MacDonald James Ramsay MacDonald (; 12 October 18669 November 1937) was a British politician who served as Prime Minister of the United Kingdom, the first who belonged to the Labour Party, leading minority Labour governments for nine months in 1924 ...
as Prime Minister (1924, 1929–1935) spent much of his attention on European policies. In his 10 months as Prime Minister 1924 he established the basic tenets of British foreign policy for the next dozen years. He had been a strong opponent of entering First World War, and in the unhappy aftermath many observers thought he had been vindicated. Incessant French demands against Germany annoyed the British leadership, and undermined the bilateral relationship with France. MacDonald made it a matter of high principle to dispense even-handed justice between France and Germany, saying, "let them put their demands in such a way that Great Britain could say that she supported both sides." MacDonald played a key role in enabling acceptance of the Dawes plan, and worked hard to make the League of Nations dream a reality. In his 10 months as Prime Minister in 1924, he set the course of British foreign policy MacDonald, and his Labour Party had a strong record of fighting communists for control union activities. In foreign affairs, however, he came to a détente with Russia and officially recognized it in 1924. A frustrating issue was repayment of British loans to Russia during the war; Moscow said it would pay only if given a loan. There was strong opposition inside Britain, so discussion focused on a commercial treaty with Russia. Just days before the 1924 general election, the media released a bombshell document signed by Grigory Zinoviev, the head of the
Communist International The Communist International (Comintern), also known as the Third International, was a Soviet-controlled international organization founded in 1919 that advocated world communism. The Comintern resolved at its Second Congress to "struggle by ...
(COMINTERN) in Moscow, ordering the British Communist Party to engage in all sorts of seditious activities. Historians agree the letter was a clever forgery, and that it disrupted the campaign, but that it did not decide the election, which was won by the Conservatives. The most negative impact on Labour was its post-election focus on trickery rather than its own structural weaknesses.


Great Depression

The Great Depression starting in 1929 put enormous pressure on the British economy. Britain move toward imperial preference, which meant low tariffs among the Commonwealth of Nations, and higher barriers toward trade with outside countries. The flow of money from New York dried up, and the system of reparations and payment of old war debt died in 1931. The disarmament efforts of the 1920s stopped and most of the major nations rearmed.


Appeasement of Germany and Italy

Vivid memories of the horrors and deaths of the World War inclined many Britons—and their leaders in all parties—to pacifism in the interwar era. This led directly to the appeasement of dictators in order to avoid their threats of war. The challenge came from dictators, first Benito Mussolini of Italy, then
Adolf Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Nazi Germany, Germany from 1933 until Death of Adolf Hitler, his death in 1945. Adolf Hitler's rise to power, He rose to power as the le ...
of a much more powerful
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
. The League of Nations proved disappointing to its supporters; it was unable to resolve any of the threats posed by the dictators. British policy was to "appease" them in the hopes they would be satiated. By 1938 it was clear that war was looming, and that Germany had the world's most powerful military. The final act of appeasement came when Britain and France sacrificed Czechoslovakia to Hitler's demands at the
Munich Agreement The Munich Agreement ( cs, Mnichovská dohoda; sk, Mníchovská dohoda; german: Münchner Abkommen) was an agreement concluded at Munich on 30 September 1938, by Germany, the United Kingdom, France, and Italy. It provided "cession to Germany ...
of 1938. Instead of satiation Hitler menaced Poland, and at last Prime Minister Neville Chamberlain dropped appeasement and stood firm in promising to defend Poland. Hitler, however, cut a deal with
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretar ...
to divide Eastern Europe; when Germany did invade Poland in September 1939, Britain and France declared war; the British Commonwealth followed London's lead.


Dominions and the Statute of Westminster

Legislative independence of the dominions from the United Kingdom occurred in the years after the passage of the '' Statute of Westminster 1931'' in the British parliament. The statute declared the dominions of the British Empire as "autonomous communities," that was "equal in status, ndin no way subordinate to one another in any aspect of their domestic or external affairs." The Act gave legal recognition to the ''de facto'' independence of the dominions, going into effect almost immediately after its passage in the dominions of Canada, the
Irish Free State The Irish Free State ( ga, Saorstát Éireann, , ; 6 December 192229 December 1937) was a state established in December 1922 under the Anglo-Irish Treaty of December 1921. The treaty ended the three-year Irish War of Independence between ...
, and South Africa. However, the Statute of Westminster did not immediately apply to the dominions of Australia, Newfoundland, and New Zealand; with Section 10 of the statute outlining that the enactment of the Act was dependent the aforementioned realms ratifying the Statute of Westminster in their local parliaments.


France

The main goal of French foreign policy between the wars was the diplomatic response to the demands of the French army in the 1920s and 1930s to form alliances against the German threat, especially with Britain and with smaller countries in central Europe.


1920s

France had a policy of active interventions, as in Russia 1918-1920, and the Rhineland following the Armistice. France wanted Poland and provided support in the
Polish–Soviet War The Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
. It supported Spain in the
Rif War The Rif War () was an armed conflict fought from 1921 to 1926 between Spain (joined by France in 1924) and the Berber tribes of the mountainous Rif region of northern Morocco. Led by Abd el-Krim, the Riffians at first inflicted several de ...
. From 1925 to 1932,
Aristide Briand Aristide Pierre Henri Briand (; 28 March 18627 March 1932) was a French statesman who served eleven terms as Prime Minister of France during the French Third Republic. He is mainly remembered for his focus on international issues and reconciliat ...
, was prime minister off and on. He supported
Weimar Germany The Weimar Republic (german: link=no, Weimarer Republik ), officially named the German Reich, was the government of Germany from 1918 to 1933, during which it was a constitutional federal republic for the first time in history; hence it is als ...
and the
League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference th ...
. He realized France was too weak to handle Germany and was dubious about British support. The solution was alliances with small weak countries called the "
Little Entente The Little Entente was an alliance formed in 1920 and 1921 by Czechoslovakia, Romania and the Kingdom of Serbs, Croats and Slovenes (since 1929 Yugoslavia) with the purpose of common defense against Hungarian revanchism and the prospect of a Ha ...
". In January 1923 as a response to the failure of the Germans to ship enough coal as part of its reparations, France (and Belgium) occupied the industrial region of the Ruhr. Germany responded with passive resistance including printing vast amounts of marks to pay for the occupation, thereby causing runaway inflation. Inflation heavily damaged the German middle class (because their bank accounts became worthless) but it also damaged the French franc. France fomented a separatist movement pointing to an independent buffer state, but it collapsed after some bloodshed. The intervention was a failure, and in summer 1924 France accepted the American solution to the reparations issues, as expressed in the
Dawes Plan The Dawes Plan (as proposed by the Dawes Committee, chaired by Charles G. Dawes) was a plan in 1924 that successfully resolved the issue of World War I reparations that Germany had to pay. It ended a crisis in European diplomacy following Wor ...
. In the 1920s, France established an elaborate system of static border defences called the Maginot Line, designed to fight off any German attack. It followed the German border but did not extend north into Belgium. Germany attacked through Belgium in 1940 and marched around the Maginot Line .


1930s

Appeasement was increasingly adopted as Germany grew stronger after 1933, for France suffered a stagnant economy, unrest in its colonies, and bitter internal political fighting. Appeasement, says Martin Thomas, was not a coherent diplomatic strategy nor a copying of the British. France appeased Italy on the Ethiopia question because it could not afford to risk an alliance between Italy and Germany. When Hitler sent troops into the Rhineland—the part of Germany where no troops were allowed—neither Paris nor London would risk war, and nothing was done. Appeasement of Germany, in cooperation with Britain, was the policy after 1936, as France sought peace even in the face of Hitler's escalating demands.
Édouard Daladier Édouard Daladier (; 18 June 1884 – 10 October 1970) was a French Radical-Socialist (centre-left) politician, and the Prime Minister of France who signed the Munich Agreement before the outbreak of World War II. Daladier was born in Carpe ...
refused to go to war against Germany and Italy without British support as Neville Chamberlain wanted to save peace using the
Munich Agreement The Munich Agreement ( cs, Mnichovská dohoda; sk, Mníchovská dohoda; german: Münchner Abkommen) was an agreement concluded at Munich on 30 September 1938, by Germany, the United Kingdom, France, and Italy. It provided "cession to Germany ...
in 1938. France's military alliance with Czechoslovakia was sacrificed at Hitler's demand when France and Britain agreed to his terms at
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the third-largest city in Germany, after Berlin and Ha ...
in 1938. The Blum government joined Britain in establishing an arms embargo during the
Spanish Civil War The Spanish Civil War ( es, Guerra Civil Española)) or The Revolution ( es, La Revolución, link=no) among Nationalists, the Fourth Carlist War ( es, Cuarta Guerra Carlista, link=no) among Carlism, Carlists, and The Rebellion ( es, La Rebeli ...
(1936–1939). Blum rejected support for the Spanish Republicans because of his fear that civil war might spread to deeply divided France. As the Republican cause faltered in Spain, Blum secretly supplied it the Republican cause with arms, funds and sanctuaries. Financial support in military cooperation with Poland was also a policy. The government nationalized arms suppliers, and dramatically increased its program of rearming the French military in a last-minute catch up with the Germans. French foreign policy in the 1920s and 1930s aimed to build military alliances with small nations in Eastern Europe in order to counter the threat of German attacks. Paris saw Romania as an ideal partner in this venture, especially in 1926 to 1939. During World War II the alliance failed. Romania was first neutral and then after Germany defeated France in 1940 and the Soviet Union annexed Northern Bukovina and all of Bessarabia it aligned with Germany. The main device France had used was arms sales in order to strengthen Romania and ensure its goodwill. French military promises were vague and not trusted after the sellout of Czechoslovakia at Munich in 1938, By 1938 French needed all the arms it could produce. Meanwhile Germany was better poised to build strong economic ties. In 1938-39 France made a final effort to guarantee Romanian borders because it calculated that Germany needed Romanian oil, but Romania decided war with Germany would be hopeless and so it veered toward Berlin.


Fascism

Fascism is a form of radical authoritarian
nationalism Nationalism is an idea and movement that holds that the nation should be congruent with the state. As a movement, nationalism tends to promote the interests of a particular nation (as in a group of people), Smith, Anthony. ''Nationalism: The ...
in Europe shortly after the First World War. It dominated Italy (1923–1943) and Nazi Germany (1933-1945) and played a role in other countries. It was based in tightly organised local groups, all controlled from the top. It violently opposed to
liberalism Liberalism is a political and moral philosophy based on the rights of the individual, liberty, consent of the governed, political equality and equality before the law."political rationalism, hostility to autocracy, cultural distaste for c ...
,
Marxism Marxism is a left-wing to far-left method of socioeconomic analysis that uses a materialist interpretation of historical development, better known as historical materialism, to understand class relations and social conflict and a dialectical ...
, and anarchism, and tried to control all aspects of society. The foreign policy Militaristic and aggressive. Fascist Italy and Nazi Germany were critical allies in the second world war. Japan, with an authoritarian government that did not have a well-mobilised popular base, was allied with them to form the Axis. Fascists saw World War I as a revolution that brought massive changes to the nature of war, society, the state, and technology. The advent of
total war Total war is a type of warfare that includes any and all civilian-associated resources and infrastructure as legitimate military targets, mobilizes all of the resources of society to fight the war, and gives priority to warfare over non-combata ...
and the total mass mobilization of society had broken down the distinction between civilians and combatants. A "military citizenship" arose in which all citizens were involved with the military in some manner during the war. The war had resulted in the rise of a powerful state capable of mobilizing millions of people to serve on the front lines and providing economic production and logistics to support them, as well as having unprecedented authority to intervene in the lives of citizens. Fascists argue that
liberal democracy Liberal democracy is the combination of a liberal political ideology that operates under an indirect democratic form of government. It is characterized by elections between multiple distinct political parties, a separation of powers into ...
is obsolete, and they regard the complete mobilization of society under a
totalitarian Totalitarianism is a form of government and a political system that prohibits all opposition parties, outlaws individual and group opposition to the state and its claims, and exercises an extremely high if not complete degree of control and reg ...
one-party state A one-party state, single-party state, one-party system, or single-party system is a type of sovereign state in which only one political party has the right to form the government, usually based on the existing constitution. All other parties ...
as necessary to prepare a nation for armed conflict and to respond effectively to economic difficulties. Opposition parties or organizations or publications are not tolerated. Such a state is led by a strong leader—such as a dictator his fascist party—to forge national unity and maintain a stable and orderly society without dissent. Fascism rejects assertions that violence is automatically negative in nature, and views political violence and warfare as tools that can achieve national rejuvenation. Hitler re-militarised Germany's Rhineland district in 1936 in defiance of the
Treaty of Versailles The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June ...
which said no troops would be stationed there. France and Britain did nothing. Hitler discovered that threats and bold moves paid off, and he escalated demands against Austria, Czechoslovakia and Poland. Finally Britain and France declared war after his
invasion of Poland The invasion of Poland (1 September – 6 October 1939) was a joint attack on the Republic of Poland by Nazi Germany and the Soviet Union which marked the beginning of World War II. The German invasion began on 1 September 1939, one week aft ...
in September 1939. The
Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposi ...
had begun.


Germany

Germany, stripped of its overseas colonies, its Polish regions in the east and Alsace-Lorraine in the West, became a republic in 1919. It was committed to democracy and modernity, but faced internal challenges from the far left and the far right, and external pressures from France.


Weimar Germany (1919–1933)

In November 1918, the Kaiser and the aristocracy, were overthrown.
Friedrich Ebert Friedrich Ebert (; 4 February 187128 February 1925) was a German politician of the Social Democratic Party of Germany (SPD) and the first president of Germany from 1919 until his death in office in 1925. Ebert was elected leader of the SPD on t ...
, leader of the Socialists (the Social Democratic Party of Germany or SPD) became Chancellor of Germany, serving until his death in 1923. His moderate faction of the SPD expelled the radical element led by
Karl Liebknecht Karl Paul August Friedrich Liebknecht (; 13 August 1871 – 15 January 1919) was a German socialist and anti-militarist. A member of the Social Democratic Party of Germany (SPD) beginning in 1900, he was one of its deputies in the Reichstag fro ...
and Rosa Luxemburg. They went on to form a Communist Party, seeking the violent overthrow of the government in the name of the working class. In January 1919, Communists led the
Spartacist uprising The Spartacist uprising (German: ), also known as the January uprising (), was a general strike and the accompanying armed struggles that took place in Berlin from 5 to 12 January 1919. It occurred in connection with the November Revolutio ...
in Berlin, Bremen, Braunschweig, and the Ruhr. The Army was largely demobilized, but many veterans volunteered to form
Freikorps (, "Free Corps" or "Volunteer Corps") were irregular German and other European military volunteer units, or paramilitary, that existed from the 18th to the early 20th centuries. They effectively fought as mercenary or private armies, rega ...
("free corps") which supported Ebert and his defense minister
Gustav Noske Gustav Noske (9 July 1868 – 30 November 1946) was a German politician of the Social Democratic Party (SPD). He served as the first Minister of Defence (''Reichswehrminister'') of the Weimar Republic between 1919 and 1920. Noske has been a cont ...
. They easily crushed the poorly organized uprisings. Liebknecht and Luxemburg were killed, leading to a permanent breach between Socialist and Communists that was never healed. In Bavaria a Communist revolt created the short lived Bavarian Socialist Republic on 6 April 1919. It was suppressed by the Army and the Freikorps the following month.


=Reparations

= The Versailles Treaty required Germany to pay reparations for the damage it did during the war. Germany tried to avoid the obligation, but France used military force and occupied German industrial areas, making reparations the "chief battleground of the post-war era" and "the focus of the power struggle between France and Germany over whether the Versailles Treaty was to be enforced or revised". The
Treaty of Versailles The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June ...
and the 1921 London Schedule of Payments required Germany to pay 132 billion
gold marks The German mark (german: Goldmark ; sign: ℳ) was the currency of the German Empire, which spanned from 1871 to 1918. The mark was paired with the minor unit of the pfennig (₰); 100 pfennigs were equivalent to 1 mark. The mark was on the ...
in reparations to cover civilian damage caused during the war. This figure was divided into three categories of bonds: A, B, and C. Of these, Germany was only required to pay towards 'A' and 'B' bonds totaling 50 billion marks (). The remaining 'C' bonds, which Germany did not have to pay, were designed to deceive the Anglo-French public into believing Germany was being heavily fined and punished for the war. Because of the lack of reparation payments by Germany, France occupied the Ruhr in 1923 to enforce payments, causing an international crisis. It was resolved by American intervention in the form of the
Dawes Plan The Dawes Plan (as proposed by the Dawes Committee, chaired by Charles G. Dawes) was a plan in 1924 that successfully resolved the issue of World War I reparations that Germany had to pay. It ended a crisis in European diplomacy following Wor ...
in 1924. This plan set out a new payment method. New York banks loaned Germany money that was used to pay reparations and rebuild its heavy industry. Despite this, by 1928 Germany called for a new payment plan, resulting in the
Young Plan The Young Plan was a program for settling Germany's World War I reparations. It was written in August 1929 and formally adopted in 1930. It was presented by the committee headed (1929–30) by American industrialist Owen D. Young, founder and for ...
that established the German reparation requirements at 112 billion marks () and created a schedule of payments that would see Germany complete payments by 1988. With the collapse of the German economy in 1931, reparations were suspended for a year and in 1932 during the Lausanne Conference they were cancelled altogether. Between 1919 and 1932, Germany paid less than 21 billion marks in reparations. After 1953 West Germany paid the entire remaining balance. The German people saw reparations as a national humiliation; the German Government worked to undermine the validity of the Treaty of Versailles and the requirement to pay. British economist
John Maynard Keynes John Maynard Keynes, 1st Baron Keynes, ( ; 5 June 1883 – 21 April 1946), was an English economist whose ideas fundamentally changed the theory and practice of macroeconomics and the economic policies of governments. Originally trained in ...
called the treaty a
Carthaginian peace A Carthaginian peace is the imposition of a very brutal "peace" intended to permanently cripple the losing side. The term derives from the peace terms imposed on the Carthaginian Empire by the Roman Republic following the Punic Wars. After the Seco ...
that would economically destroy Germany. His arguments had a profound effect on historians, politicians, and the public at large in Britain and elsewhere. Despite Keynes' arguments and those by later historians supporting or reinforcing Keynes' views, the consensus of contemporary historians is that reparations were not as intolerable as the Germans or Keynes had suggested and were within Germany's capacity to pay had there been the political will to do so.


=Rapallo and Locarno treaties

= Apart from the reparations issue, Germany's highest priority was normalizing its relations with its neighbors. The new policy was to turn east for a new friendship with the communist Soviet Union In 1922, they signed the Treaty of Rapallo. The Soviets for the first time were recognized; it opened the way for large scale trade. Moscow secretly allowed Germany to train soldiers and airmen in exchange for giving Russia military technology.


Nazi Germany (1933–1945)

Hitler and his Nazis turned Germany into a dictatorship with a highly hostile outlook toward the Treaty of Versailles and Jews. It solved its unemployment crisis by heavy military spending. Hitler's diplomatic tactics were to make seemingly reasonable demands, then threatening war if they were not met; concessions were made, he accepted them and moved onto a new demand. When opponents tried to appease him, he accepted the gains that were offered, then went to the next target. That aggressive strategy worked as Germany pulled out of the League of Nations (1933), rejected the Versailles Treaty and began to re-arm (1935) with the
Anglo-German Naval Agreement The Anglo-German Naval Agreement (AGNA) of 18 June 1935 was a naval agreement between the United Kingdom and Germany regulating the size of the '' Kriegsmarine'' in relation to the Royal Navy. The Anglo-German Naval Agreement fixed a ratio whe ...
, won back the Saar (1935), re-militarized the Rhineland (1936), formed an alliance ("axis") with Mussolini's Italy (1936), sent massive military aid to Franco in the Spanish Civil War (1936–1939), seized Austria (1938), took over Czechoslovakia after the British and French appeasement of the Munich Agreement of 1938, formed a peace pact with Stalin's Russia in August 1939, and finally invaded Poland in September 1939.


1933–1935

Hitler and the leading Nazis had little diplomatic experience before they came to power in January 1933, and they moved slowly in that arena, concentrating on a total takeover of the power centers inside Germany. The first external move was to cripple a disarmament conference that was underway in Geneva, by rejecting troop limitations. The Germans insisted that the Nazi storm troopers should not be counted in any quota system. Although Britain, France, Italy and the United States were ready to freeze armaments for four years, the Germans insisted on having "defensive weapons" immediately. Germany quit the disarmament conference and the League in October 1933 but even then few European leaders (apart from Winston Churchill) saw Hitler as an enemy or threat to peace. For example,
Eric Phipps Sir Eric Clare Edmund Phipps (27 October 1875 – 13 August 1945) was a British diplomat. Family Phipps was the son of Sir Constantine Phipps, later British Ambassador to Belgium, and his wife, Maria Jane (née Miller Mundy). Henry Phipps ...
the British ambassador 1933–1937 eagerly promoted policies, later known as
appeasement Appeasement in an international context is a diplomatic policy of making political, material, or territorial concessions to an aggressive power in order to avoid conflict. The term is most often applied to the foreign policy of the UK governme ...
. He believed that the League of Nations Was the key to preventing the next war, and tried to enlist the French in efforts to get the Germans to cooperate. Mussolini was also eager to cooperate with Hitler, and succeeded in getting the German signature on the Four-Power Pact, between Britain, France, Italy, and Germany. The Pact failed, and after Hitler visited Mussolini in Rome, they had a falling out German intentions to take over Austria. Britain and France tried for the next several years to attract Italy more to their side than to Germany's. In January 1934 Germany signed a non-aggression pact with Poland, which disrupted the French network of anti-German alliances in Eastern Europe. In March 1935 Hitler denounced the requirement of German disarmament contained in the Versailles Treaty of 1919. Germany and Britain came to terms in June 1935, in the
Anglo-German Naval Agreement The Anglo-German Naval Agreement (AGNA) of 18 June 1935 was a naval agreement between the United Kingdom and Germany regulating the size of the '' Kriegsmarine'' in relation to the Royal Navy. The Anglo-German Naval Agreement fixed a ratio whe ...
. Germany promised to limit or naval expansion to 35 percent of the British, thereby driving a wedge between Britain and France. Americans had a deep negative attitude toward Hitler and the Nazis, and relations steadily deteriorated over trade disputes, anti-Jewish demonstrations, and rearmament. Washington decided that German foreign policy primarily reflected two factors: its internal economic problems and Hitler's expansionist dreams. Meanwhile, the new Roosevelt administration opened relations with the Soviet Union on a basis of détente, along with the promise there would be no espionage.


1936–37


Eastern Europe

A major result of the First World War was the breakup of the Russian, Austro-Hungarian, and Ottoman empires, as well as partial losses to the German Empire. A surge of ethnic nationalism created a series of new states in Eastern Europe, validated by the
Versailles Treaty of 1919 The Treaty of Versailles (french: Traité de Versailles; german: Versailler Vertrag, ) was the most important of the peace treaties of World War I. It ended the state of war between Germany and the Allied Powers. It was signed on 28 June 19 ...
.
Ukraine Ukraine ( uk, Україна, Ukraïna, ) is a country in Eastern Europe. It is the second-largest European country after Russia, which it borders to the east and northeast. Ukraine covers approximately . Prior to the ongoing Russian inv ...
, Belarus, Georgia, Armenia, and Azerbaijan tried to do the same but were later retaken by the Bolsheviks in Russia. Czechoslovakia and Yugoslavia became entirely new nations. Austria and Hungary survived with much smaller territories based on their German and Hungarian core populations. Poland was reconstituted after the partitions of the 1790s had divided it between Germany, Austria, and Russia. Romania, Bulgaria and Albania survived the tumble, but their borders were adjusted. All the countries were heavily rural, with little industry and only a few urban centers. Nationalism was the dominant force but most of the countries had ethnic or religious minorities who felt threatened by majority elements. Nearly all became democratic in the 1920s, but all of them (except Czechoslovakia and Finland) gave up democracy during the depression years of the 1930s, in favor of autocratic or strong-man or single party states. The new states were unable to form stable military alliances, and one by one were too weak to stand up against Nazi Germany or the Soviet Union, which took them over between 1938 and 1945.


Baltic states

Estonia, Latvia, and Lithuania successfully broke away from Russia in 1918-1920 and became independent countries. Bolshevik radicals at first held power, especially in Latvia, but were replaced during the 1920s with conservative political coalitions based on ethnic nationalism. The population in the early 1920s ranged from 1.1 million in Estonia, and 1.8 million in Latvia, to 2.2 million in Lithuania. Minorities comprised 12% of the population of Estonia, 27% in Latvia, and 20% in Lithuania. Each was heavily rural, especially Lithuania. Each privileged its main ethnic majority and its language and religion. They all had to deal with a mosaic of minorities: Germans, Jews, Belorussians, Russians, and Poles. The minorities had different languages, religions, and cultures. The Germans generally were the main landowners. There were outside attempts to incite separatist movements, with little success. The Baltic governments limited the rights and privileges of the minorities, but the minorities had enough solidarity to resist assimilation. These attempts caused an unfavorable international reaction. Poland's seizure of Vilnius outraged the Lithuanians and made impossible any coordination or diplomatic cooperation among the three countries. All three survived until 1939-40, when they were taken over by the Soviet Union and the local leadership was suppressed, executed or escaped into exile. The Germans invaded in 1941 and were expelled in 1944. After additional purges large numbers of Russians were resettled in Estonia and Latvia, and smaller numbers in Lithuania.


Greece

In
Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders ...
, the site of several revanchist wars in the years prior to the First World War, the divided international loyalties of the political elite reached a crisis over entering the World War against its historic enemy, the
Ottoman Empire The Ottoman Empire, * ; is an archaic version. The definite article forms and were synonymous * and el, Оθωμανική Αυτοκρατορία, Othōmanikē Avtokratoria, label=none * info page on book at Martin Luther University) ...
. During what was known as the
National Schism The National Schism ( el, Εθνικός Διχασμός, Ethnikós Dichasmós), also sometimes called The Great Division, was a series of disagreements between King Constantine I and Prime Minister Eleftherios Venizelos regarding the foreig ...
, a pro-British, liberal and nationalist movement led by Eleftherios Venizelos struggled with the conservative and pro-German monarch
Constantine I Constantine I ( , ; la, Flavius Valerius Constantinus, ; ; 27 February 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337, the first one to Constantine the Great and Christianity, convert to Christiani ...
for control. Greek troops seized Smyrna and a large sector of western Anatonia in 1919. They had British support. In 1920 the Ottoman government agreed to the
Treaty of Sèvres The Treaty of Sèvres (french: Traité de Sèvres) was a 1920 treaty signed between the Allies of World War I and the Ottoman Empire. The treaty ceded large parts of Ottoman territory to France, the United Kingdom, Greece and Italy, as well ...
; it stipulated that in five years time a plebiscite would be held in Smyrna on whether the region would join Greece. However,
Turkish nationalists Turkish may refer to: *a Turkic language spoken by the Turks * of or about Turkey ** Turkish language *** Turkish alphabet ** Turkish people, a Turkic ethnic group and nation *** Turkish citizen, a citizen of Turkey *** Turkish communities and ...
, led by Mustafa Kemal Atatürk, overthrew the Ottoman government and tried to expel the Greeks in the Greco-Turkish War (1919–1922). A major Greek offensive ground to a halt in 1921, and by 1922 Greek troops were in retreat. The Turkish forces recaptured Smyrna and drove out all the Greek forces. The war with Turkey ended with an agreement to stage massive ethnic exchange, with 1.1 million ethnic Greek Christians who had lived in what was now Turkey (and perhaps could not speak Greek) moving back to Greece, and 380,000 Muslims moving to Turkey.


Hungary

In the chaos of 1919, Hungarian communists, encouraged by Moscow, overthrew the government and established the
Hungarian Soviet Republic The Socialist Federative Republic of Councils in Hungary ( hu, Magyarországi Szocialista Szövetséges Tanácsköztársaság) (due to an early mistranslation, it became widely known as the Hungarian Soviet Republic in English-language sources ( ...
on 21 March 1919.
Béla Kun Béla Kun (born Béla Kohn; 20 February 1886 – 29 August 1938) was a Hungarian communist revolutionary and politician who governed the Hungarian Soviet Republic in 1919. After attending Franz Joseph University at Kolozsvár (today Cluj-Napo ...
was officially the foreign minister but in practice was the new leader. His regime nationalized industry and finance but made the mistake of not redistributing land to the peasants. The plan was to establish a large-scale collective farms managed by the old landlord class. Dissent grew but was violently suppressed in the Red Terror. Hungary was soon at war with Romania and Czechoslovakia, both aided by France, and the regime collapsed in August 1919. The "white" counter-revolutionaries, rooted in the landowning class, came to power under Admiral
Miklós Horthy Miklós Horthy de Nagybánya ( hu, Vitéz nagybányai Horthy Miklós; ; English: Nicholas Horthy; german: Nikolaus Horthy Ritter von Nagybánya; 18 June 1868 – 9 February 1957), was a Hungarian admiral and dictator who served as the regent ...
, an authoritarian ruler from 1920 to his arrest in 1944. They used force to suppress the remnants of the revolutionaries. In the 1920
Treaty of Trianon The Treaty of Trianon (french: Traité de Trianon, hu, Trianoni békeszerződés, it, Trattato del Trianon) was prepared at the Paris Peace Conference and was signed in the Grand Trianon château in Versailles on 4 June 1920. It forma ...
, Hungary lost a great deal of historic territory and resources, with many ethnic Hungarians now located in other countries. Ethnic Hungarians wanted a restoration of their status. Hungarians stranded elsewhere formed organizations to maintain their identity, such as Czechoslovakia's St. George Scout Circle (later called "Sarló" ) and Romania's Transylvanian Youth (Erdélyi Fiatalok). One result was closeness to fascist Italy and Nazi Germany, which promised to restore lost territories.


Franco-British failed alliance with Moscow

After the German occupation of Prague in March 1939, in violation of the Munich agreement, the Chamberlain government in Britain sought Soviet and French support for a Peace Front. The goal was to deter further Nazi aggression by guaranteeing the independence of Poland and Romania. However Stalin refused to pledge Soviet support for these guarantees unless Britain and France first concluded a military alliance with the USSR. In London the cabinet decided to seek such an alliance. However the western negotiators in Moscow in August 1939 lacked urgency. The talks were poorly conducted at a slow pace by diplomats with little authority, such as
William Strang William Strang (13 February 1859 – 12 April 1921) was a Scottish painter and printmaker, notable for illustrating the works of John Bunyan, Bunyan, Samuel Taylor Coleridge, Coleridge and Rudyard Kipling, Kipling. Early life Strang was bor ...
, an assistant under-secretary. Stalin also insisted on British and French guarantees to Finland, the Baltic states, Poland, and Romania against indirect German aggression. Those countries, however, became fearful that Moscow wanted to control them. Although Hitler was escalating threats against Poland, it refused under any circumstances to allow Soviet troops to cross its borders. Historian Michael Jabara Carley argues that the British were too committed to anti-communism to trust Stalin. Meanwhile Stalin simultaneously was secretly negotiating with the Germans. He was attracted to a much better deal by Hitler—control of most of Eastern Europe and decided to sign the Molotov-Ribbentrop Pact.


Soviet Union


Allied intervention in Russia 1918–1920

France, Britain, Japan, the United States led an armed intervention into Russia during the last year of the World War and the
Russian Civil War {{Infobox military conflict , conflict = Russian Civil War , partof = the Russian Revolution and the aftermath of World War I , image = , caption = Clockwise from top left: {{flatlist, *Soldiers ...
. The goals were to block German advances, then helping the
Czechoslovak Legion The Czechoslovak Legion (Czech language, Czech: ''Československé legie''; Slovak language, Slovak: ''Československé légie'') were volunteer armed forces composed predominantly of Czechs and Slovaks fighting on the side of the Allies of World ...
in securing supplies of munitions and armaments in Russian ports. At times between 1918 and 1920 the Czechoslovak Legion controlled the entire
Trans-Siberian Railway The Trans-Siberian Railway (TSR; , , ) connects European Russia to the Russian Far East. Spanning a length of over , it is the longest railway line in the world. It runs from the city of Moscow in the west to the city of Vladivostok in the ea ...
and several major cities in Siberia. By 1919 the goal was to help the White forces in the Russian Civil War. When the Whites collapsed the forces were withdrawn by 1920 (or 1922 in the case of Japan). The Soviet government until its collapse in 1991 made the episode a feature of their anti-Western propaganda. Allied troops also landed in
Arkhangelsk Arkhangelsk (, ; rus, Арха́нгельск, p=ɐrˈxanɡʲɪlʲsk), also known in English as Archangel and Archangelsk, is a city and the administrative center of Arkhangelsk Oblast, Russia. It lies on both banks of the Northern Dvina near ...
and in
Vladivostok Vladivostok ( rus, Владивосто́к, a=Владивосток.ogg, p=vɫədʲɪvɐˈstok) is the largest city and the administrative center of Primorsky Krai, Russia. The city is located around the Golden Horn Bay on the Sea of Japan, c ...
as part of the
North Russia Intervention The North Russia intervention, also known as the Northern Russian expedition, the Archangel campaign, and the Murman deployment, was part of the Allied intervention in the Russian Civil War after the October Revolution. The intervention brought ...
. Allied efforts were hampered by divided objectives and
war-weariness War-weariness is the public or political disapproval for the continuation of a prolonged conflict or war. The causes normally involve the intensity of casualties—financial, civilian, and military. It also occurs when a belligerent has the abil ...
from the overall World War. These factors, together with the evacuation of the Czechoslovak Legion in September 1920, compelled the Allied powers to end the North Russia and
Siberian intervention The Siberian intervention or Siberian expedition of 1918–1922 was the dispatch of troops of the Entente powers to the Russian Maritime Provinces as part of a larger effort by the western powers, Japan, and China to support White Russian f ...
s in 1920, though the
Japanese intervention in Siberia The of 1918–1922 was the dispatch of Japanese military forces to the Russian Maritime Provinces as part of a larger effort by western powers and Japan to support White Russian forces against the Bolshevik Red Army during the Russian Civil ...
continued until 1922 and the Japan continued to occupy the northern half of
Sakhalin Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh ...
island until 1925. Historian John Thompson argues that while the intervention failed to stop the Bolshevik revolution in Russia, it did prevent its spread to central Europe:
However, it did succeed and so thoroughly engaging the forces of revolutionary expansionism that the countries of war-torn eastern and central Europe, potentially most susceptible to the Bolshevik contagion, were able to recover enough social and economic balance to withstand Bolshevism. The interventionist attempt left an ugly legacy of fear and suspicion to future relations between Russia and the other great powers, and it strengthened the hand of those among the Bolshevik leadership who were striving to impose monolithic unity and unquestioning obedience on the Russian people.


Soviet foreign policy

Soviet foreign policy went through a series of stages. The first stage from late 1917 into 1922 involved defeating foreign interventions, and an internal Civil War. The Soviets maintained control over much of the former Russian Empire, and regained control over the Transcaucasian republics. They lost Finland, Poland and the Baltics, which remained independent until the Second World War. They regained control of the eastern half of Ukraine in 1921 after a short war with Poland. There was a short war in 1919–20 with Romania. Flushed with victory, Lenin, Trotsky, and the other leaders in Moscow were convinced that they represented the wave of the future, and that with a little help provided by the
Communist International The Communist International (Comintern), also known as the Third International, was a Soviet-controlled international organization founded in 1919 that advocated world communism. The Comintern resolved at its Second Congress to "struggle by ...
(Comintern), headed by Grigory Zinoviev they could spark anti-capitalist revolutions across the globe. However the interventions were all failures. In most cases the insurgents were quickly defeated by the established national forces. A communist-socialist coalition came to power in Hungary, with communist
Béla Kun Béla Kun (born Béla Kohn; 20 February 1886 – 29 August 1938) was a Hungarian communist revolutionary and politician who governed the Hungarian Soviet Republic in 1919. After attending Franz Joseph University at Kolozsvár (today Cluj-Napo ...
becoming the dictator. The Romanians invaded and overthrew his regime in early August 1919. In Berlin, the communist forces under the Spartacist red banner led revolts in Berlin,
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the third-largest city in Germany, after Berlin and Ha ...
and the Ruhr that were quickly crushed by the army in a matter of days. The long series of defeats produced a ''
cordon sanitaire ''Cordon sanitaire'' () is French for "sanitary cordon". It may refer to: *Cordon sanitaire (medicine), a cordon that quarantines an area during an infectious disease outbreak *Cordon sanitaire (politics), refusal to cooperate with certain politic ...
'' or chain of buffer states. The USSR had become a pariah state and the second stage was to work around that bad reputation. Its size and economic importance facilitated making trade agreements (which did not include official diplomatic recognition) with Britain, Italy, Austria, Germany, and Norway in 1921. The
Treaty of Rapallo, 1922 The Treaty of Rapallo was an agreement signed on 16 April 1922 bet ...
with Germany—another pariah state—opened up trade and recognition. It secretly allowed large-scale military training for German forces in hidden Soviet military installations. The
New Economic Policy The New Economic Policy (NEP) () was an economic policy of the Soviet Union proposed by Vladimir Lenin in 1921 as a temporary expedient. Lenin characterized the NEP in 1922 as an economic system that would include "a free market and capitalism, ...
(1921–1928) allowed a limited capitalism in the USSR and led to invitations to foreign corporations to do business.
Henry Ford Henry Ford (July 30, 1863 – April 7, 1947) was an American industrialist, business magnate, founder of the Ford Motor Company, and chief developer of the assembly line technique of mass production. By creating the first automobile that ...
and his experts came from Detroit and built modern factories at
GAZ GAZ or Gorkovsky Avtomobilny Zavod (russian: ГАЗ or Го́рьковский автомоби́льный заво́д, , Gorky Automobile Plant) is a Russian automotive manufacturer located in Nizhny Novgorod, formerly known as Gorky (Го� ...
; Ford was convinced that commerce made for peace.


Stalin

Lenin was incapacitated by 1922 and died in 1924.
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretar ...
gradually took power, and rejected the goal of sponsoring Communist uprisings. In 1924 came recognition by Britain, Italy, France and Japan. Stalin removed Zinoniev and purged Trotsky and his hard-line allies who preached world revolution. The first priority, said Stalin, was expressed in the official slogan, "Socialism in One Country." In 1928 the NEP experiment with capitalism was ended. Britain had formally recognised the USSR on 1 February 1924. However , the fake Zinoviev letter was believed in Britain and caused a chill. Diplomatic relations were severed at the end of May 1927 after prime minister Stanley Baldwin presented the House of Commons with deciphered Soviet telegrams that proved Soviet espionage activities. In 1929, the incoming Labour government successfully established permanent diplomatic relations. At the Sixth World Congress of the Communist International in 1928, Stalin issued orders that across the world Communist parties would never be allowed to cooperate with Socialists or other leftist parties—they were all "social fascists" and were as evil as the capitalists because they were enemies of the proletariat. Communists infiltrated and tried to seize control of labour unions and the Socialists fought back as hard as they could. In a return to normal relations with nearby states, in 1932 Stalin signed non-aggression treaties with the ''cordon sanitaire'' states of Poland, Estonia, Latvia, Finland, and France. The USSR joined the League of Nations in 1934. The United States was the last major country to recognize the Soviet state. Recognition in 1933 was popular in the US; businessmen planned for large-scale trade, but it never materialized.


Popular Front

Communists and parties on the left were increasingly threatened by the growth of the Nazi movement. Hitler came to power in January 1933 and rapidly consolidated his control over Germany, destroyed the communist and socialist movements in Germany, and rejected the restraints imposed by the Versailles treaty. Stalin in 1934 reversed his decision in 1928 to attack socialists, and introduced his new plan: the "popular front." It was a coalition of anti-fascist parties usually organized by the local Communists acting under instructions from the Comintern. The new policy was to work with all parties on the left and center in a multiparty coalition against fascism and Nazi Germany in particular. The new slogan was: "The People's Front Against Fascism and War". Under this policy Communist Parties were instructed to form broad alliances with all anti-fascist parties with the aim of both securing social advance at home and a military alliance with the USSR to isolate the fascist dictatorships. The "Popular Fronts" thus formed proved to be successful in only a few countries, and only for a few years each, forming the government in France, Chile and Spain, and also China. It was not a political success elsewhere. The Popular Front approach played a major role in Resistance movements in France and other countries conquered by Germany after 1939. After the war it played a major role in French and Italian politics. In 1938–39, the Soviet Union attempted to form strong military alliances with Germany's enemies, including France, and Great Britain. The effort failed, and the last stage unfolded to the astonishment of the world: Stalin and Hitler came to terms. Historian
François Furet François Furet (; 27 March 1927 – 12 July 1997) was a French historian and president of the Saint-Simon Foundation, best known for his books on the French Revolution. From 1985 to 1997, Furet was a professor of French history at the University ...
says, "The pact signed in Moscow by Ribbentrop and Molotov on 23 August 1939 inaugurated the alliance between the USSR and Nazi Germany. It was presented as an alliance and not just a nonaggression pact." The secret covenants agreed on a mutual division of Poland, and split up Eastern Europe, with the USSR taking over the Baltic states. The USSR helped supply oil and munitions to Germany as its armies rolled across Western Europe in May–June 1940. Despite repeated warnings, Stalin refused to believe that Hitler was planning an all-out war on the USSR. It came in June 1941.


Ukraine

Ukraine was a complex ethnic mix, comprising Ukrainians, Russians, Jews, Poles, and other minorities and lacking a strong sense of nationalism. The social, political, cultural, and economic elites were based in the major cities, espoused Russian nationalism, and were generally indifferent or hostile to Ukrainian nationalism. Peasants on the other hand, were strongly in favor of independence in order to redistribute the land. Ukraine tried to break free from Russia after the February 1917 revolution in St. Petersburg. The leadership was young, ideological, hostile to capitalism and landowners, and inexperienced. It did not realize the necessity of a strong army—it turned down a force of 40,000 trained soldiers as unnecessary—nor the need to build infrastructure and public support in the rural areas. Outside powers acted on entirely different visions for Ukraine. The British ridiculed the pretensions of the new nation. White Russians, united only by their opposition to Bolshevism, wanted to restore Ukraine as a Russian province. Russian Bolsheviks did not believe in nationalism and twice invaded Ukraine in failed efforts to seize control and collectivize the farms; they succeeded the third time in 1920. Americans were outraged at the large-scale massacres of Jews in 1919. Germany supported Ukrainian nationalism as a foil to Russia, but its chief goal was to obtain urgently needed food supplies. Ukraine was too poorly organized to fulfill the promised food shipments. Poland wanted Ukraine in order to build a population that could stand up against Germany. France wanted Poland as a strong anti-German ally and therefore supported Polish ambitions. Poland did seize Ukraine in 1919, but was driven out in the
Polish–Soviet War in 1920 The Polish–Soviet war erupted in 1919 in the aftermath of World War I. The root causes were twofold: a territorial dispute dating back to Polish–Russian wars in the 17–18th centuries; and a clash of ideology due to RSFSR's goal of spreading c ...
. Historian Paul Kubicek states:
Between 1917 and 1920, several entities that aspired to be independent Ukrainian states came into existence. This period, however, was extremely chaotic, characterized by revolution, international and civil war, and lack of strong central authority. Many factions competed for power in the area that is today's Ukraine, and not all groups desired a separate Ukrainian state. Ultimately, Ukrainian independence was short-lived, as most Ukrainian lands were incorporated into the Soviet Union and the remainder, in western Ukraine, was divided among Poland, Czechoslovakia, and Romania.
A Canadian scholar
Orest Subtelny Orest Subtelny ( uk, О́рест Субте́льний, 17 May 1941 – 24 July 2016) was a Ukrainian-Canadian historian. Born in Kraków, Poland, he received his doctorate from Harvard University in 1973. From 1982 to 2015, he was a Professor ...
provides a context from the long span of European history:
In 1919 total chaos engulfed Ukraine. Indeed, in the modern history of Europe no country experienced such complete anarchy, bitter civil strife, and total collapse of authority as did Ukraine at this time. Six different armies—those of the Ukrainians, the Bolsheviks, the Whites, the Entente
rench The Rench is a right-hand tributary of the Rhine in the Ortenau ( Central Baden, Germany). It rises on the southern edge of the Northern Black Forest at Kniebis near Bad Griesbach im Schwarzwald. The source farthest from the mouth is that of the ...
the Poles and the anarchists—operated on its territory. Kiev changed hands five times in less than a year. Cities and regions were cut off from each other by the numerous ilitaryfronts. Communications with the outside world broke down almost completely. The starving cities emptied as people moved into the countryside in their search for food.
The
Ukrainian War of Independence The Ukrainian War of Independence was a series of conflicts involving many adversaries that lasted from 1917 to 1921 and resulted in the establishment and development of a Ukrainian republic, most of which was later absorbed into the Soviet U ...
of 1917 to 1921 produced the
Ukrainian Soviet Socialist Republic The Ukrainian Soviet Socialist Republic ( uk, Украї́нська Радя́нська Соціалісти́чна Респу́бліка, ; russian: Украи́нская Сове́тская Социалисти́ческая Респ ...
(in 1919 merged from the
Ukrainian People's Republic The Ukrainian People's Republic (UPR), or Ukrainian National Republic (UNR), was a country in Eastern Europe that existed between 1917 and 1920. It was declared following the February Revolution in Russia by the First Universal. In March 1 ...
and
West Ukrainian People's Republic The West Ukrainian People's Republic (WUPR) or West Ukrainian National Republic (WUNR), known for part of its existence as the Western Oblast of the Ukrainian People's Republic, was a short-lived polity that controlled most of Eastern Gali ...
) which was quickly subsumed in the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
.


Spanish Civil War

The Spanish Civil War exposed political divisions across Europe. The right and the Catholics supported the
Nationalists Nationalism is an idea and movement that holds that the nation should be congruent with the state. As a movement, nationalism tends to promote the interests of a particular nation (as in a group of people), Smith, Anthony. ''Nationalism: The ...
as a way to stop the expansion of
Bolshevism Bolshevism (from Bolshevik) is a revolutionary socialist current of Soviet Marxist–Leninist political thought and political regime associated with the formation of a rigidly centralized, cohesive and disciplined party of social revolution, ...
. On the left, including labor unions, students and intellectuals, the war represented a necessary battle to stop the spread of fascism and support the cause of the Spanish Republicans. Antiwar and pacifist sentiment was strong in many countries, leading to warnings that the Civil War had the potential of escalating into a second world war. In this respect, the war was an indicator of the growing instability across Europe. The Spanish Civil War involved tens of thousands of outsiders from right and left who came to fight. Italy sent infantry regiments; Germany sent its air force. Communist elements around the world, working through
Popular Front A popular front is "any coalition of working-class and middle-class parties", including liberal and social democratic ones, "united for the defense of democratic forms" against "a presumed Fascist assault". More generally, it is "a coalition ...
collaborations with anti-fascist parties but supervised by Moscow, sent volunteers to the "International Brigades." Most of these volunteers were Communist party members, typically with a dedication of their time, energy, and lives To an idealistic cause. Many writers and intellectuals on the left became involved, including
Ernest Hemingway Ernest Miller Hemingway (July 21, 1899 – July 2, 1961) was an American novelist, short-story writer, and journalist. His economical and understated style—which he termed the iceberg theory—had a strong influence on 20th-century f ...
, who supported the Republican cause, and George Orwell, who reversed himself and turned sharply anti-Communist. Moscow also sent along a cadre of agents from their secret police force, NKVD and GUM. Their mission was to enforce solidarity and the party line, and to identify and execute left-wing anarchists whose agenda threatened the Stalinist line. The Spanish government in 1937 shipped its entire gold supply (worth over $500 million at the time) to Moscow for safekeeping. This gave Stalin leverage over the Spanish government, as he controlled the payments for all sales of arms to Spain. The gold was never returned. Britain and France led a coalition of 27 nations that promised
non-intervention in the Spanish Civil War During the Spanish Civil War, several countries followed a principle of non-intervention to avoid any potential escalation or possible expansion of the war to other states. That would result in the signing of the Non-Intervention Agreement in Au ...
, including an embargo on all arms to Spain. The United States unofficially went along. Germany, Italy and the Soviet Union signed on officially, but ignored the embargo. The attempted suppression of imported materials was largely ineffective, however, and France especially facilitated large shipments to Republican troops. The
League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference th ...
did not try to act. As the Spanish Civil War progressed, most governments maintained diplomatic relations with the Republicans, but as the Nationalists' imminent victory became apparent, the western democracies had to quickly readjust their diplomacy to prevent a permanent allegiance of the new Spanish government to the eventual Axis Powers. The French government, previously a tentative sympathizer of the Republican cause, formed the Bérard-Jordana Agreement with the Spanish Nationalists on 25 February 1939, formally recognizing Franco's government as the legitimate government of Spain.
Philippe Pétain Henri Philippe Benoni Omer Pétain (24 April 1856 – 23 July 1951), commonly known as Philippe Pétain (, ) or Marshal Pétain (french: Maréchal Pétain), was a French general who attained the position of Marshal of France at the end of Worl ...
, the eventual leader of
Vichy France Vichy France (french: Régime de Vichy; 10 July 1940 – 9 August 1944), officially the French State ('), was the fascist French state headed by Marshal Philippe Pétain during World War II. Officially independent, but with half of its te ...
, became France's ambassador to Francoist Spain. The British government recognized the Franco government on the same day, and the United States government followed suit on 7 April 1939. The Franco government maintained an ambiguous stance between the western democracies and the European fascists and joined the German-Japanese
Anti-Comintern Pact The Anti-Comintern Pact, officially the Agreement against the Communist International was an anti-Communist pact concluded between Nazi Germany and the Empire of Japan on 25 November 1936 and was directed against the Communist International (C ...
on 24 March 1939. However, the Spanish government, put off by the German-Soviet cooperation in the Molotov-Ribbentrop Pact in August 1939, ultimately declined open membership in the Axis Powers and maintained neutrality in World War II, although Spanish volunteers were allowed to fight for the Axis cause as part of the German 250th Infantry Division.


Latin America

The main foreign policy initiative of the United States was the
Good Neighbor Policy The Good Neighbor policy ( ) was the foreign policy of the administration of United States President Franklin Roosevelt towards Latin America. Although the policy was implemented by the Roosevelt administration, President Woodrow Wilson had prev ...
, which was a move toward a more non-interventionist U.S. policy in
Latin America Latin America or * french: Amérique Latine, link=no * ht, Amerik Latin, link=no * pt, América Latina, link=no, name=a, sometimes referred to as LatAm is a large cultural region in the Americas where Romance languages — languages derived f ...
. Since the 1890s Americans had seen this region as an American
sphere of influence In the field of international relations, a sphere of influence (SOI) is a spatial region or concept division over which a state or organization has a level of cultural, economic, military or political exclusivity. While there may be a formal a ...
. American forces were withdrawn from Haiti, and new treaties with Cuba and Panama ended their status as U.S.
protectorate A protectorate, in the context of international relations, is a state that is under protection by another state for defence against aggression and other violations of law. It is a dependent territory that enjoys autonomy over most of its int ...
s. In December 1933, Roosevelt signed the
Montevideo Convention The Montevideo Convention on the Rights and Duties of States is a treaty signed at Montevideo, Uruguay, on December 26, 1933, during the Seventh International Conference of American States. The Convention codifies the declarative theory of state ...
on the Rights and Duties of States, renouncing the right to intervene unilaterally in the affairs of Latin American countries. The U.S. repealed the
Platt Amendment On March 2, 1901, the Platt Amendment was passed as part of the 1901 Army Appropriations Bill.Great Depression in Latin America had a devastating impact, as the demand for its raw materials drastically declined, undermining the critical export sector. Chile, Peru, and Bolivia were hardest hit. Intellectuals and government leaders in Latin America turned their backs on the older economic policies and turned toward
import substitution industrialization Import substitution industrialization (ISI) is a trade and economic policy that advocates replacing foreign imports with domestic production.''A Comprehensive Dictionary of Economics'' p.88, ed. Nelson Brian 2009. It is based on the premise that ...
. The goal was to create self-sufficient economies, which would have their own industrial sectors and large middle classes and which would be immune to the ups and downs of the global economy. Despite the potential threats to United States commercial interests, the Roosevelt administration (1933–1945) understood that the United States could not wholly oppose import substitution. Roosevelt implemented a
Good Neighbor policy The Good Neighbor policy ( ) was the foreign policy of the administration of United States President Franklin Roosevelt towards Latin America. Although the policy was implemented by the Roosevelt administration, President Woodrow Wilson had prev ...
and did not block the nationalization of some American companies in Latin America. Mexican President Lázaro Cárdenas nationalized American
oil companies The following is a list of notable companies in the petroleum industry that are engaged in petroleum exploration and production. The list is in alphabetical order by continent and then by country. This list does not include companies only involved ...
, out of which he created Pemex.


Brazil

In Brazil, the largest country, a liberal revolution of 1930 overthrew the oligarchic coffee plantation owners and brought to power an urban middle class that had business interests that promoted industrialization and modernization. Aggressive promotion of new industry turned around the economy by 1933, and encouraged American investors' support. Brazil's leaders in the 1920s and 1930s decided that Argentina's implicit foreign policy goal was to isolate Portuguese-speaking Brazil from Spanish-speaking neighbors, thus facilitating the expansion of Argentine economic and political influence in South America. Even worse, was the fear that a more powerful Argentine Army would launch a surprise attack on the weaker Brazilian Army. To counter this threat, Brazil forged closer links with the United States. Meanwhile, Argentina moved in the opposite direction. During World War II, Brazil was a staunch ally of the United States and sent its military to Europe. The United States provided over $100 million in Lend-Lease grants, in return for free rent on air bases used to transport American soldiers and supplies across the Atlantic, and naval bases for anti-submarine operations. In sharp contrast, Argentina was officially neutral and at times favored Germany.


Border disputes and warfare

Small-scale border disputes were common, but only one spiralled out of control, leading to a major war: the
Chaco War The Chaco War ( es, link=no, Guerra del Chaco, gn, Cháko ÑorairõGran Chaco The Gran Chaco or Dry Chaco is a sparsely populated, hot and semiarid lowland natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion of the Brazilian states of Mato ...
, a large but long-neglected border region where oil had recently been discovered. Bolivia, heavy oil, but needed a port on rivers controlled by Paraguay to export it. Bolivia used authoritarian methods to raise a large, well-equipped army. However, its soldiers were accustomed to high altitudes and became sickly in the low-lying disease infested Chaco jungles. Paraguay, employing émigré Russian officers, had much better planning and logistics, and was generally more successful militarily. About 28,000 soldiers and all were killed. Paraguay was awarded about three fourths of the disputed territory in a peace treaty brokered by Argentina and four other South American nations. Frustrated Bolivian veterans formed a political party, staged a coup and ruled for three years until they in turn were overthrown by the next coup


Asia and Africa


Egypt

In December 1921, demonstrations again led to violence. In deference to the growing nationalism and at the suggestion of the High Commissioner, Lord Allenby, the UK unilaterally declared Egyptian independence on 28 February 1922. Britain, however, continued in control of what was renamed the
Kingdom of Egypt The Kingdom of Egypt ( ar, المملكة المصرية, Al-Mamlaka Al-Miṣreyya, The Egyptian Kingdom) was the legal form of the Egyptian state during the latter period of the Muhammad Ali dynasty's reign, from the United Kingdom's recog ...
. Britain guided the king and retained control of the Canal Zone, Sudan and Egypt's external and military affairs. King Fuad died in 1936 and
King Farouk Farouk I (; ar, فاروق الأول ''Fārūq al-Awwal''; 11 February 1920 – 18 March 1965) was the tenth ruler of Egypt from the Muhammad Ali dynasty and the penultimate King of Egypt and the Sudan, succeeding his father, Fuad I, in 1 ...
inherited the throne at the age of sixteen. Alarmed by the Second Italo-Abyssinian War when Italy invaded Ethiopia, he signed the Anglo-Egyptian Treaty, requiring Britain to withdraw all troops from Egypt by 1949, except at the Suez Canal. During World War II, British troops used Egypt as its primary base for all Allied operations throughout the region. British troops were withdrawn to the Suez Canal area in 1947, but nationalist, anti-British feelings continued to grow after the war.


Japan

In Japan, the Army increasingly took control of the government, assassinated opposing leaders, suppressed the left, and promoted a highly aggressive foreign policy with respect to China. Japanese policy angered the United States, Britain, France, and the Netherlands. Japanese nationalism was the primary inspiration, coupled with a disdain for democracy. The extreme right became influential throughout the Japanese government and society, notably within the
Kwantung Army ''Kantō-gun'' , image = Kwantung Army Headquarters.JPG , image_size = 300px , caption = Kwantung Army headquarters in Hsinking, Manchukuo , dates = April ...
, which was stationed in Manchuria along the Japanese-owned South Manchuria Railroad. During the
Manchurian Incident The Mukden Incident, or Manchurian Incident, known in Chinese as the 9.18 Incident (九・一八), was a false flag event staged by Japanese military personnel as a pretext for the 1931 Japanese invasion of Manchuria. On September 18, 1931, L ...
of 1931, radical army officers conquered Manchuria from local officials and set up the puppet government of Manchukuo there without permission from the Japanese government. International criticism of Japan following the invasion led to Japan withdrawing from the League of Nations. Japan's expansionist vision grew increasingly bold. Many of Japan's political elite aspired to have Japan acquire new territory for resource extraction and settlement of surplus population. These ambitions led to the outbreak of the
Second Sino-Japanese War The Second Sino-Japanese War (1937–1945) or War of Resistance (Chinese term) was a military conflict that was primarily waged between the Republic of China and the Empire of Japan. The war made up the Chinese theater of the wider Pacific Th ...
in 1937. After their victory in the Chinese capital, the Japanese military committed the infamous
Nanking Massacre The Nanjing Massacre (, ja, 南京大虐殺, Nankin Daigyakusatsu) or the Rape of Nanjing (formerly romanized as ''Nanking'') was the mass murder of Chinese civilians in Nanjing, the capital of the Republic of China, immediately after the ...
. The Japanese military failed to destroy the Chinese government led by Chiang Kai-shek, which retreated to remote areas. The conflict was a stalemate that lasted until 1945. Japan's war aim was to establish the
Greater East Asia Co-Prosperity Sphere The , also known as the GEACPS, was a concept that was developed in the Empire of Japan and propagated to Asian populations which were occupied by it from 1931 to 1945, and which officially aimed at creating a self-sufficient bloc of Asian peo ...
, a vast pan-Asian union under Japanese domination. Hirohito's role in Japan's foreign wars remains a subject of controversy, with various historians portraying him as either a powerless figurehead or an enabler and supporter of Japanese militarism. The United States grew increasingly worried about the Philippines, an American colony, within easy range of Japan and started looking for ways to contain Japanese expansion. American public and elite opinion—including even the
isolationist Isolationism is a political philosophy advocating a national foreign policy that opposes involvement in the political affairs, and especially the wars, of other countries. Thus, isolationism fundamentally advocates neutrality and opposes entan ...
s—strongly opposed Japan's invasion of China in 1937. President Roosevelt imposed increasingly stringent economic sanctions intended to deprive Japan of the oil and steel in needed to continue its war in China. Japan reacted by forging an alliance with Germany and Italy in 1940, known as the
Tripartite Pact The Tripartite Pact, also known as the Berlin Pact, was an agreement between Germany, Italy, and Japan signed in Berlin on 27 September 1940 by, respectively, Joachim von Ribbentrop, Galeazzo Ciano and Saburō Kurusu. It was a defensive milit ...
, which worsened its relations with the US. In July 1941, the United States, Great Britain, and the Netherlands froze all Japanese assets and cut off oil shipments—Japan had little oil of its own.


China

The Chinese revolution of 1911 that overthrew the last Emperor resulted in a decade of chaotic conditions, with power held by regional warlords with no functioning national government. A series of economic boycotts, aimed especially at the dominant intruder Great Britain, effectively ended European domination of China. Sun Yat-sen, the ideological leader of the revolution against the old Chinese Empire, established a revolutionary base in south China, and tried but failed to unite the fragmented nation. With assistance from the
Communist International The Communist International (Comintern), also known as the Third International, was a Soviet-controlled international organization founded in 1919 that advocated world communism. The Comintern resolved at its Second Congress to "struggle by ...
based in the USSR, he entered into an alliance with the fledgling
Chinese Communist Party The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and sole ruling party of the People's Republic of China (PRC). Under the leadership of Mao Zedong, the CCP emerged victorious in the Chinese Civil ...
. After Sun's death in 1925, his protégé, Chiang Kai-shek was in control of the ''
Kuomintang The Kuomintang (KMT), also referred to as the Guomindang (GMD), the Nationalist Party of China (NPC) or the Chinese Nationalist Party (CNP), is a major political party in the Republic of China, initially on the Chinese mainland and in Tai ...
'' (Nationalist Party or KMT) and brought most of south and central China under its rule the
Northern Expedition The Northern Expedition was a military campaign launched by the National Revolutionary Army (NRA) of the Kuomintang (KMT), also known as the "Chinese Nationalist Party", against the Beiyang government and other regional warlords in 1926. The ...
military campaign of 1926–1927. Having defeated the warlords in south and central China by military force, Chiang was able to secure the nominal allegiance of the warlords in the North. In 1927, Chiang turned on the Communists and relentlessly chased the CPC armies and its leaders from their bases in southern and eastern China. In 1934, driven from their mountain bases such as the
Chinese Soviet Republic The Chinese Soviet Republic (CSR) was an East Asian proto-state in China, proclaimed on 7 November 1931 by Chinese communist leaders Mao Zedong and Zhu De in the early stages of the Chinese Civil War. The discontiguous territories of the ...
, the CPC forces embarked on the
Long March The Long March (, lit. ''Long Expedition'') was a military retreat undertaken by the Red Army of the Chinese Communist Party (CCP), the forerunner of the People's Liberation Army, to evade the pursuit of the National Army of the Chinese ...
across China's most desolate terrain to the northwest, where the survivors established a guerrilla base at
Yan'an Yan'an (; ), alternatively spelled as Yenan is a prefecture-level city in the Shaanbei region of Shaanxi province, China, bordering Shanxi to the east and Gansu to the west. It administers several counties, including Zhidan (formerly Bao'an) ...
in Shaanxi Province. During the Long March, the communists reorganized under a new leader,
Mao Zedong Mao Zedong pronounced ; also romanised traditionally as Mao Tse-tung. (26 December 1893 – 9 September 1976), also known as Chairman Mao, was a Chinese communist revolutionary who was the founder of the People's Republic of China (PRC) ...
(Mao Tse-tung), who looked to the peasants—not the small industrial proletariat—for his party's base. Japan's army in China was a virtually autonomous unit that was not well controlled by Tokyo. It sought to control all of Manchuria and indeed was ambitious toward moving deep into China. It seized Manchuria in September 1931 and set up
Puyi Aisin-Gioro Puyi (; 7 February 1906 – 17 October 1967), courtesy name Yaozhi (曜之), was the last emperor of China as the eleventh and final Qing dynasty monarch. He became emperor at the age of two in 1908, but was forced to abdicate on 1 ...
as head of the
puppet state A puppet state, puppet régime, puppet government or dummy government, is a state that is ''de jure'' independent but ''de facto'' completely dependent upon an outside power and subject to its orders.Compare: Puppet states have nominal sove ...
of Manchukuo in 1932. The
League of Nations The League of Nations (french: link=no, Société des Nations ) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference th ...
denounced Japan, and Tokyo quit the League. The United States and Britain refused to recognize the conquest, but made no military moves at this point. The Japanese began to push from south of the
Great Wall The Great Wall of China (, literally "ten thousand ''li'' wall") is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups ...
into northern China and the coastal provinces. In 1937, the Japanese army, still largely independent of Tokyo, clashed with Chinese forces in the Marco Polo Bridge Incident outside Beijing. A full-scale war now began—the
Second Sino-Japanese War The Second Sino-Japanese War (1937–1945) or War of Resistance (Chinese term) was a military conflict that was primarily waged between the Republic of China and the Empire of Japan. The war made up the Chinese theater of the wider Pacific Th ...
. Japan held enormous advantages in wealth, technology, firepower, mobility and organizational strength. China had a very large, poor, population with a weak nation government and a large, poorly equipped and poorly trained army. China did enjoy the sympathy of most of the world, especially the United States and Britain, but they did not intervene. Shanghai fell after a three-month battle and Japan took control virtually all the coastal cities. The capital of
Nanjing Nanjing (; , Mandarin pronunciation: ), alternately romanized as Nanking, is the capital of Jiangsu province of the People's Republic of China. It is a sub-provincial city, a megacity, and the second largest city in the East China region. T ...
fell in December 1937. It was followed by an orgy of mass murders and rapes known as the
Nanjing Massacre The Nanjing Massacre (, ja, 南京大虐殺, Nankin Daigyakusatsu) or the Rape of Nanjing (formerly romanized as ''Nanking'') was the mass murder of Chinese civilians in Nanjing, the capital of the Republic of China, immediately after the ...
. Chiang moved his national capital to remote Chongqing. Japan set up a second puppet government, the
Wang Jingwei regime The Wang Jingwei regime or the Wang Ching-wei regime is the common name of the Reorganized National Government of the Republic of China ( zh , t = 中華民國國民政府 , p = Zhōnghuá Mínguó Guómín Zhèngfǔ ), the government of the pu ...
, based in Nanjing. The United States took the lead in expressing outrage, and began plans to systematically aid Chiang's regime by a long supply line through Indochina while demanding that Japan withdraw. Japan took control of Indochina from France in 1941, cutting the main supply line, and escalating the conflict toward a war with the United States and Britain.Bradford A. Lee, ''Britain and the Sino-Japanese war, 1937-1939: a study in the dilemmas of British decline'' (1973).


Coming of World War II


Wars

*
Turkish War of Independence The Turkish War of Independence "War of Liberation", also known figuratively as ''İstiklâl Harbi'' "Independence War" or ''Millî Mücadele'' "National Struggle" (19 May 1919 – 24 July 1923) was a series of military campaigns waged by th ...
** Greco-Turkish War (May 1919 – October 1922) ** Turkish–Armenian War (September–December 1920) **
Franco-Turkish War The Franco–Turkish War, known as the Cilicia Campaign (french: La campagne de Cilicie) in France and as the Southern Front ( tr, Güney Cephesi) of the Turkish War of Independence in Turkey, was a series of conflicts fought between France (the ...
(December 1918 – October 1921) ** Royalist and separatist revolts (1919–1923) *
Unification of Saudi Arabia The Unification of Saudi Arabia was a military and political campaign in which the various tribes, sheikhdoms, city-states, emirates, and kingdoms of most of the Arabian Peninsula were conquered by the House of Saud, or ''Al Saud''. Unifica ...
** Rashidi-Saudi War (1903–1921) ** Kuwait-Saudi War (1919–1920) ** Hejaz-Saudi War (1919–1925) ** Transjordan-Saudi War (1922–1924) *
Polish–Soviet War The Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
(February 1919 – March 1921) * Irish War of Independence (January 1919 – July 1921) *
Iraqi revolt against the British The Iraqi revolt against the British, also known as the 1920 Iraqi Revolt or the Great Iraqi Revolution, started in Baghdad in the summer of 1920 with mass demonstrations by Iraqis, including protests by embittered officers from the old Ottoman ...
(1920) *
Rif War The Rif War () was an armed conflict fought from 1921 to 1926 between Spain (joined by France in 1924) and the Berber tribes of the mountainous Rif region of northern Morocco. Led by Abd el-Krim, the Riffians at first inflicted several de ...
(1920–1927) *
Pacification of Libya The Second Italo-Senussi War, also referred to as the Pacification of Libya, was a conflict that occurred during the Italian colonization of Libya between Italian military forces (composed mainly of colonial troops from Libya, Eritrea, and ...
(1923–1932)


See also

* International relations (1648–1814) * International relations (1814–1919) * Aftermath of World War I * Appeasement * Causes of World War II *
Communist International The Communist International (Comintern), also known as the Third International, was a Soviet-controlled international organization founded in 1919 that advocated world communism. The Comintern resolved at its Second Congress to "struggle by ...
(The " Comintern") * European foreign policy of the Neville Chamberlain government * Germany–Soviet Union relations before 1941 * Soviet Union–United States relations * Interwar period * Interwar Britain * Jazz age *
Minority Treaties The Minority Treaties are treaty, treaties, League of Nations mandates, and unilateral declarations made by countries applying for membership in the League of Nations that conferred basic rights on all the inhabitants of the country without disti ...
*
Political history of the world The political history of the world is the history of the various political entities created by the human race throughout their existence and the way these states define their borders. Throughout history, political systems have expanded from ...


Timelines

* Timeline of the 2nd millennium * Timeline of the Great Depression * Timeline of the 20th century, since 1900 *
Timeline of events preceding World War II This timeline of events preceding World War II covers the events of the interwar period (1918–1939) after World War I that affected or led to World War II. __NOTOC__ 1910s: 19181919 1920s: 192019211922 1923192419251926 1927 19281929 1930s ...
** Events preceding World War II in Europe **
Events preceding World War II in Asia This article is concerned with the events that preceded World War II in Asia. Kuomintang and Communism in China The revolution led by the Kuomintang (KMT, or Chinese Nationalist Party) and others ended the last Chinese dynasty, the Qing dyn ...
*
Diplomatic history of World War I The diplomatic history of World War I covers the non-military interactions among the major players during World War I. For the domestic histories of participants see home front during World War I. For a longer-term perspective see international re ...
* Diplomatic history of World War II


Notes


References


Further reading

* Albrecht-Carrié, René. ''A Diplomatic History of Europe Since the Congress of Vienna'' (1958), 736pp; a basic introduction, 1815–195
online free to borrow
* Carr, Edward Hallett. ''
The Twenty Years' Crisis ''The Twenty Years' Crisis: 1919–1939: An Introduction to the Study of International Relations'' is a book on international relations written by E. H. Carr. The book was written in the 1930s shortly before the outbreak of World War&nb ...
, 1919-1939: an introduction to the study of international relations'' (1939)
excerptonline 1946 edition
famous statement of "realism" * Gathorne-Hardy, G.M. ''A Short History of International Affairs, 1920-1939'' (4th ed. 1950), 514p
online
British perspective *Grossman, Mark ed. ''Encyclopedia of the Interwar Years: From 1919 to 1939'' (2000). * Hasluck, E. L. ''Foreign Affairs 1919-1937'' (1938), detailed narrative country-by-country; 378p
online
* * Marks, Sally. ''The Illusion of Peace: International Relations in Europe 1918-1933'' (Macmillan, 2003). * - chapters 9-21 pp 118–282. essays by experts
excerpt
* Martel, Gordon, ed. ''A Companion to Europe 1900-1945'' (2010), ch 17-26 pp 259–422; essays by experts;
excerpts
* Morris, Richard B. and Graham W. Irwin, eds. ''Harper Encyclopedia of the Modern World: A Concise Reference History from 1760 to the Present'' (1970
online
* Rich, Norman. ''Great Power Diplomacy Since 1914'' (2003), comprehensive survey * Sontag, Raymond James. ''A broken world, 1919-1939'' (1972
online free to borrow
wide-ranging survey of European history


Specialty scholarly studies

* Bell, P.M.H. ''The Origins of the Second World War in Europe'' (2014). * Blumenthal, Henry. ''Illusion and Reality in Franco-American Diplomacy, 1914–1945'' (1986) * Boyce, Robert. ''French Foreign and Defence Policy, 1918-1940: The Decline and Fall of a Great Power'' (1998) * Brendon, Piers. ''The Dark Valley: A Panorama of the 1930s'' (2000) comprehensive global political history; 816p
excerpt
* Burgwyn, H. James. ''Italian Foreign Policy in the Interwar Period, 1918-1940'' (1997). * Dailey, Andy. ''Move to Global War'' (2015) 205pp; textbook on coming of WWII
excerpt on Japan's expansion
* Dailey, Andy, and David G. Williamson. ''Peacemaking, Peacekeeping: International Relations 1918-36'' (2012) 244pp; textbook, heavily illustrated with diagrams and contemporary photographs and colour posters. * Dallek, Robert. ''Franklin D. Roosevelt and American foreign policy, 1932-1945'' (1979
online
* Davis, Richard. ''Anglo-French Relations before the Second World War: Appeasement and Crisis'' (2001) * Doerr, Paul W. ''British Foreign Policy, 1919-1939'' (Manchester UP, 1998), university-level textbook. * Doumanis, Nicholas, ed. ''The Oxford Handbook of European History, 1914-1945'' (2016
excerpt
* Dunn, J.S. ''The Crowe Memorandum: Sir Eyre Crowe and Foreign Office Perceptions of Germany, 1918-1925'' (Cambridge Scholars Publishing, 2012)
excerpt
on British policy toward Germany * Easum, Chester V. ''Half-Century of Conflict'' (1951) cover 1900-1950; 929pp textbook focused on wars & diplomacy * Eichengreen, Barry. ''Elusive stability: essays in the history of international finance, 1919-1939'' (Cambridge UP, 1993). * Eloranta, Jari. "Why did the League of Nations fail?." ''Cliometrica'' 5.1 (2011): 27-52
online
on League of Nations * Gardner, Lloyd C. ''Safe for Democracy: The Anglo-American Response to Revolution, 1913-1923'' (1987) focus on Lloyd George and Wilson * Gilbert, Felix, and Gordon Craig, eds. ''The Diplomats, 1919-1939'' (1963). scholarly essays on key diplomats. * Grant, Jonathan A. ''Between Depression and Disarmament: The International Armaments Business, 1919-1939'' (Cambridge UP, 2018)
Online review
* Howland, Charles P. ''Survey of American Foreign Relations, 1930'' (1931) wide-ranging overview late 1920s * Hucker, Daniel. ''Public Opinion and the End of Appeasement in Britain and France.'' (Routledge, 2016). * Hughes, Michael. ''British Foreign Secretaries in an Uncertain World, 1919-1939'' (Psychology Press, 2006). * * Kennedy, Paul. ''The Rise and Fall of the Great Powers Economic Change and Military Conflict From 1500-2000'' (1987), stress on economic and military factors * Macnair, Harley F. & Donald Lach. ''Modern Far Eastern International Relations.'' (2nd ed 1955
1950 edition online free
780pp; focus on 1900-1950 * * Medlicott, W. N. ''British foreign policy since Versailles, 1919-1963'' (1968), 364pp. * Meiser, Jeffrey W. ''Power and Restraint: The Rise of the United States, 1898--1941'' (Georgetown UP, 2015). * Møller, Jørgen, Alexander Schmotz, and Svend-Erik Skaaning. "Economic crisis and democratic breakdown in the interwar years: a reassessment." ''Historical Social Research/Historische Sozialforschung'' (2015): 301-318
online
* - 25 chapters; 845pp * Mowat, R.B. ''A History Of European Diplomacy 1914-1925'' (1927
online free
scholarly history 452pp * Mulder, Nicholas. ''The Economic Weapon: The Rise of Sanctions as a Tool of Modern War'' (2022
excerpt
* Nekrich, Aleksandr Moiseevich. ''Pariahs, partners, predators: German-Soviet relations, 1922-1941'' (Columbia University Press, 1997). * Overy, Richard J. ''The Origins of the Second World War'' (1987)
excerpt
* Paine, S. C. M. ''The Wars for Asia, 1911-1949'' (2014
excerpt
focus on China, Japan and Russia * Pereboom, Maarten L. ''Democracies at the Turning Point: Britain, France and the End of the Postwar Order, 1928-1933'' (1997). * Petrie, Charles. ''Diplomatic History, 1713-1933'' (1946
online free
detailed summary * Piahanau, Aliaksandr, ed. ''Great Power Policies Towards Central Europe, 1914-1945'
online free
* Pons, Silvio, and Stephen A. Smith, eds. ''The Cambridge History of Communism (Volume 1): World Revolution and Socialism in One Country, 1917-1941'' (2017
excerpt
* Salzmann, Stephanie C. ''Great Britain, Germany and the Soviet Union: Rapallo and after, 1922-1934'' (Royal Historical Society, 2002
full text online
* Service, Robert. ''Comrades: A World History of Communism'' (2007). * Seton-Watson, Hugh. ''Eastern Europe Between the Wars, 1918-1941'' (1945
online
* - 550pp; old-fashioned coverage of Britain, 1910–35 * Sontag, Raymond James. "Between the Wars." ''Pacific Historical Review'' 29.1 (1960): 1-1
online
* Spender, J.A. ''Great Britain: empire and commonwealth, 1886-1935'' (1936) pp 575–838. * Steiner, Zara. ''The Lights that Failed: European International History 1919-1933 '' (2007) 960pp; comprehensive coverag
excerpt
* Steiner, Zara. ''The Triumph of the Dark: European International History 1933–1939'' (2013) 1222pp comprehensive coverage
excerpt
* Takeuchi, Tatsuji. ''War and Diplomacy in The Japanese Empire'' (1935
online
scholarly coverage * Thorne, Christopher G. ''The limits of foreign policy; the West, the League, and the Far Eastern crisis of 1931-1933'' (1972
online
* Tooze, Adam. ''The Deluge: The Great War, America and the Remaking of the Global Order, 1916-1931'' (2014) emphasis on economic
excerpt
* Ulam, Adam B. ''Expansion and coexistence: Soviet foreign policy, 1917–73'' (2nd ed 1974
online
* Watt, Donald Cameron. ''How War Came: The Immediate Origins of the Second World War'' (1989
online
* Weinberg, Gerhard L. ''Hitler's Foreign Policy 1933-1939: The Road to World War II'' (2010) * Williams, Andrew J. "France, Britain and the United States in the 1930s until the Fall of France." in Williams, ed., ''France, Britain and the United States in the Twentieth Century 1900–1940'' (2014). 133-171.


Contemporary accounts

* Cambon, Jules, ed ''The Foreign Policy Of The Powers'' (1935) Essays by experts that cover France, Germany, Great Britain, Italy, Japan, Russia and the United State
Online free
* Toynbee, Arnold J. ''Survey Of International Affairs 1937 Vol-1'' (1938
online
vol 2 on Spanish Civil War:
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1936'' (1937
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1935 vol I'' (1936)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1932'' (1933
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1929'' (1930)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1928'' (1929)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1927'' (1928)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1925'' (1927)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1924'' (1928)
online
* Toynbee, Arnold J. ''Survey Of International Affairs 1920-23'' (1927)
online


Historiography

* Adamthwaite, Anthony. "‘A Low Dishonest Decade’?." in Nicholas Doumanis, ed. ''The Oxford Handbook of European History, 1914-1945'' (2016): 207-222. * Cornelissen, Christoph, and Arndt Weinrich, eds. ''Writing the Great War - The Historiography of World War I from 1918 to the Present'' (2020
free download
full coverage for major countries. * Gomes, Leonard. ''German Reparations, 1919-1932: A Historical Survey'' (Springer, 2010). * Jackson, Peter. "Post‐War Politics and the Historiography of French Strategy and Diplomacy Before the Second World War." ''History Compass'' 4.5 (2006): 870-905. * Jacobson, Jon. "Strategies of French foreign policy after World War I." ''Journal of Modern History'' 55.1 (1983): 78-95
online
* Kennedy, Ross A. "Four new takes on Wilson, World War I, and the making of the post-war order." ''Journal of Strategic Studies'' (2018): 1-13. * Marks. Sally. "Mistakes and Myths: The Allies, Germany, and the Versailles Treaty, 1918–1921" ''Journal of Modern History'' 85#3 (2013), pp. 632–65
online
* Pedersen, Susan. "Back to the League of Nations." ''American Historical Review'' 112.4 (2007): 1091-1117.
online
* Trachtenberg, Marc. "Versailles after sixty years." ''Journal of Contemporary History'' 17.3 (1982): 487-506
online


Maps

* Banks, Arthur. ''A World Atlas Of Military History 1861-1945'' (1988) pp 95–100. * Catchpole, Brian. ''Map History of the Modern World'' (1982) pp 26–66. * Haywood, John. ''Atlas of world history'' (1997
online free
* Horrabin, J.F. ''An Atlas of Empire'' (1937) 70 maps of all the world's colonies * O'Brien, Patrick, ed. ''Philips' Atlas World History'' (2005) * ''Rand McNally Atlas of World History'' (1983), maps #76-81. Published in Britain as the ''Hamlyn Historical Atlas''
online free


Primary sources

* Adamthwaite, Anthony P. ed. ''The Lost Peace, International Relations in Europe, 1918-1939'' (1981) 236pp; excerpts from 69 documents * Berber, F.J. ed. ''Locarno A Collection Of Documents'' (1936
online
useful English translations of 76 major diplomic documents 1919-36, with a biased anti-French introduction by Nazi Germany's Foreign Minister. * Degras, Jane T. ''The Communist International, 1919-43'' (3 Vols. 1956); documents
online volume 1 (1919-22)volume 2 (1923-28)
an
volume 3 (1929-1943)
* Kertesz, G.A. ed ''Documents in the Political History of the European Continent 1815-1939'' (1968), pp 385–507; 200 short documents * Maisky, Ivan. ''The Maisky Diaries: The Wartime Revelations of Stalin's Ambassador in London'' edited by Gabriel Gorodetsky, (Yale UP, 2016); highly revealing commentary 1932-43
excerpts
abridged from 3 volume Yale edition
online review
* Temperley, A.C. ''The Whispering Gallery Of Europe'' (1938), revealing British memoir of disarmament conference of 1932-34
online
{{DEFAULTSORT:International relations, 1919-1939 20th century in international relations
International relations International relations (IR), sometimes referred to as international studies and international affairs, is the scientific study of interactions between sovereign states. In a broader sense, it concerns all activities between states—such a ...
1920s 1930s History of international relations Aftermath of World War I Chronology of World War II Former countries of the interwar period