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Pactomania is a term originally created to describe the period between 1945 and 1955, during which the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
concluded or ratified a significant amount of alliances, treaties, and pacts. The word "Pactomania" was first used in a ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' article in 1955. Following
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the US abandoned its previous policy of isolationism and embraced internationalism, occupying
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
, southern
Korea Korea is a peninsular region in East Asia consisting of the Korean Peninsula, Jeju Island, and smaller islands. Since the end of World War II in 1945, it has been politically Division of Korea, divided at or near the 38th parallel north, 3 ...
, and zones in
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
and
Austria Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...
, hosting the new
United Nations The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
,
International Monetary Fund The International Monetary Fund (IMF) is a major financial agency of the United Nations, and an international financial institution funded by 191 member countries, with headquarters in Washington, D.C. It is regarded as the global lender of las ...
, and
World Bank The World Bank is an international financial institution that provides loans and Grant (money), grants to the governments of Least developed countries, low- and Developing country, middle-income countries for the purposes of economic development ...
, and establishing the
US dollar The United States dollar (symbol: $; currency code: USD) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it int ...
as the world's
reserve currency A reserve currency is a foreign currency that is held in significant quantities by central banks or other monetary authorities as part of their foreign exchange reserves. The reserve currency can be used in international transactions, internat ...
through the
Bretton Woods system The Bretton Woods system of monetary management established the rules for commercial relations among 44 countries, including the United States, Canada, Western European countries, and Australia, after the 1944 Bretton Woods Agreement until the ...
. In terms of defense, the US initially supported the idea of
collective security Collective security is arrangement between states in which the institution accepts that an attack on one state is the concern of all and merits a collective response to threats by all. Collective security was a key principle underpinning the Lea ...
by the five
UN Security Council The United Nations Security Council (UNSC) is one of the six principal organs of the United Nations (UN) and is charged with ensuring international peace and security, recommending the admission of new UN members to the General Assembly, an ...
powers, with the US focused on the defense of its sphere of influence in the
Western Hemisphere The Western Hemisphere is the half of the planet Earth that lies west of the Prime Meridian (which crosses Greenwich, London, United Kingdom) and east of the 180th meridian.- The other half is called the Eastern Hemisphere. Geopolitically, ...
through the
Organization of American States The Organization of American States (OAS or OEA; ; ; ) is an international organization founded on 30 April 1948 to promote cooperation among its member states within the Americas. Headquartered in Washington, D.C., United States, the OAS is ...
and the multilateral Rio Pact security alliance. However, growing concerns over the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
's large military presence and installation of
satellite state A satellite state or dependent state is a country that is formally independent but under heavy political, economic, and military influence or control from another country. The term was coined by analogy to planetary objects orbiting a larger ob ...
s in
Eastern Europe Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural and socio-economic connotations. Its eastern boundary is marked by the Ural Mountain ...
, espionage activities within the US, and the potential for the spread of communism in devastated Europe and decolonizing nations led to a shift in US foreign policy. The inability of the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
to manage these issues, as evidenced by the
Greek Civil War The Greek Civil War () took place from 1946 to 1949. The conflict, which erupted shortly after the end of World War II, consisted of a Communism, Communist-led uprising against the established government of the Kingdom of Greece. The rebels decl ...
and
Turkish Straits crisis The Turkish Straits crisis was a Cold War-era territorial conflict between the Soviet Union and Turkey. Turkey had remained officially Neutral powers during World War II, neutral throughout most of the Second World War. After the war ended, Turk ...
, prompted the US to become closely involved in Europe and adopt the
Truman Doctrine The Truman Doctrine is a Foreign policy of the United States, U.S. foreign policy that pledges American support for democratic nations against Authoritarianism, authoritarian threats. The doctrine originated with the primary goal of countering ...
of containing communism through
Marshall Plan The Marshall Plan (officially the European Recovery Program, ERP) was an American initiative enacted in 1948 to provide foreign aid to Western Europe. The United States transferred $13.3 billion (equivalent to $ in ) in economic recovery pr ...
financial aid and the multilateral
North Atlantic Treaty Organization The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental transnational military alliance of 32 member states—30 European and 2 North American. Established in the aftermat ...
(NATO) security alliance. In Asia, the US initially focused on the Acheson Line or "defense perimeter", which did not prioritize China, Korea, or Taiwan. However, the
fall of China In American political discourse, the "loss of China" is the unexpected Chinese Communist Party coming to power in mainland China from the U.S.-backed Nationalist Chinese Kuomintang government in 1949 and therefore the "loss of China to communism." ...
to communism and the subsequent public outcry in the US led to a change in approach. The US became involved in the
Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...
and established a system of bilateral security alliances along the western
Pacific Rim The Pacific Rim comprises the lands around the rim of the Pacific Ocean. The '' Pacific Basin'' includes the Pacific Rim and the islands in the Pacific Ocean. The Pacific Rim roughly overlaps with the geological Pacific Ring of Fire. List ...
, often referred to as the " hub-and-spoke system", including alliances with
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
,
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
,
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
, and the
Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
, as well as Australia and New Zealand. Additionally, the multilateral
Southeast Asia Treaty Organization The Southeast Asia Treaty Organization (SEATO) was an international organization for collective defense in Southeast Asia created by the Southeast Asia Collective Defense Treaty signed in September 1954 in Manila, Philippines. The formal insti ...
(SEATO) security alliance was formed in
Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
. The multilateral Middle East Treaty Organization (METO) security alliance, intended to fight communism in the
Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...
, ended up never being joined by the United States due to "the pro-Israel lobby". The alliances formed during Pactomania have played a pivotal role in the modern era, from the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
to the
Russian invasion of Ukraine On 24 February 2022, , starting the largest and deadliest war in Europe since World War II, in a major escalation of the Russo-Ukrainian War, conflict between the two countries which began in 2014. The fighting has caused hundreds of thou ...
. Many of the alliances formed during Pactomania remain today, although SEATO, METO, and the US-Taiwan alliance have been dissolved. Despite the dissolution of SEATO, its underlying collective defense treaty remains in force, and forms the basis of the US-
Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...
mutual security alliance. Similarly, in spite of the 1979 dissolution of the US-Taiwan alliance, the US retains significant military relations with Taiwan through the
Taiwan Relations Act The Taiwan Relations Act (TRA; ) is an Act of Congress, act of the United States Congress. Since the Joint Communiqué on the Establishment of Diplomatic Relations, formal recognition of the China, People's Republic of China, the Act has defined ...
.


End of isolationism

Prior to this bout of "Pactomania" the United States was described by historians as interventionist in the case of world affairs, but isolationist in the case of alliances. It is often argued by political scientists such as Bear Braumoeller that the US used other methods, particularly financial, to exert its influence over the world. Meanwhile, it avoided outside alliances, treaties, and pacts. Engaging with other countries’ affairs was discouraged in
George Washington George Washington (, 1799) was a Founding Fathers of the United States, Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot (American Revoluti ...
's farewell address and the
Monroe Doctrine The Monroe Doctrine is a foreign policy of the United States, United States foreign policy position that opposes European colonialism in the Western Hemisphere. It holds that any intervention in the political affairs of the Americas by foreign ...
. It had been followed in American foreign policy, with the exception of the world wars. As the Cold War divided the world into two, both the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
and the United States sought to grow their alliances.


John Foster Dulles

John Foster Dulles was the Secretary of State to President
Dwight D. Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was the 34th president of the United States, serving from 1953 to 1961. During World War II, he was Supreme Commander of the Allied Expeditionar ...
, and a senator for a brief period. Due to his values and experience from his career in law, he believed in the advantages of treaties to fight
communist Communism () is a sociopolitical, philosophical, and economic ideology within the socialist movement, whose goal is the creation of a communist society, a socioeconomic order centered on common ownership of the means of production, di ...
forces in the
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
. He employed this strategy throughout his career such as in 1945, helping create the
UN Charter The Charter of the United Nations is the foundational treaty of the United Nations (UN). It establishes the purposes, governing structure, and overall framework of the United Nations System, UN system, including its United Nations System#Six ...
, and in 1954, the
Southeast Asia Treaty Organization The Southeast Asia Treaty Organization (SEATO) was an international organization for collective defense in Southeast Asia created by the Southeast Asia Collective Defense Treaty signed in September 1954 in Manila, Philippines. The formal insti ...
(SEATO) and the Middle East Treaty Organization (METO). Dulles also proposed the creation of a Northeast Asia Treaty Organization (NEATO), which was shelved in favor of bilateral alliances with the concerned states. Before his death, he contributed to the creation of the Eisenhower Doctrine. Dulles demonstrated the importance of treaties to United States foreign policy.


Significant alliances and events


United Nations (1945)

One of the biggest alliances was the creation of the United Nations, an international organization created at the end of
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, to promote peace and curtail war. It was made to replace the
League of Nations The League of Nations (LN or LoN; , SdN) 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 (1919–1920), Paris Peace ...
. Former United States President Woodrow Wilson helped found the League after the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, but it was never joined by the US. President
Franklin D. Roosevelt Franklin Delano Roosevelt (January 30, 1882April 12, 1945), also known as FDR, was the 32nd president of the United States, serving from 1933 until his death in 1945. He is the longest-serving U.S. president, and the only one to have served ...
proposed the idea of the UN to Soviet Premier
Joseph Stalin Joseph Vissarionovich Stalin (born Dzhugashvili; 5 March 1953) was a Soviet politician and revolutionary who led the Soviet Union from 1924 until Death and state funeral of Joseph Stalin, his death in 1953. He held power as General Secret ...
in November 1943. It was jointly discussed with and proposed by China, the USSR, the United Kingdom, and the United States. The Declaration of the United Nations was crafted in 1942 at the Arcadia Conference, but the organization was officially created with the signing of the UN Charter in 1945. Both of these events took place in US cities. At the time the UN was founded, US President Harry Truman's aim was to increase America's participation in international organizations, which is why it was one of the founding members, and the first country to ratify the Charter. Through the creation of the UN Charter, six smaller organizations, called " organs" were created to handle separate affairs: *
General Assembly A general assembly or general meeting is a meeting of all the members of an organization or shareholders of a company. Specific examples of general assembly include: Churches * General Assembly (presbyterian church), the highest court of presby ...
* Economic and Social Council * Trusteeship council *
International Court of Justice The International Court of Justice (ICJ; , CIJ), or colloquially the World Court, is the only international court that Adjudication, adjudicates general disputes between nations, and gives advisory opinions on International law, internation ...
* Secretariat


Rio Pact (1947)

The idea to create this treaty, also known as the
Rio Treaty The Inter-American Treaty of Reciprocal Assistance (commonly known as the Rio Treaty, the Rio Pact, the Treaty of Reciprocal Assistance, or by the Spanish-language acronym TIAR from ''Tratado Interamericano de Asistencia Recíproca'') is an inter ...
, had been discussed since the late 1930s when the leaders of the Americas met in several South American cities. However, the countries could not agree due to hesitance from the US and Uruguay. When Senator Vandenburg publicly espoused the idea in a 1947 speech, and the Senate accepted it, nations could sign the Treaty in
Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...
. Initially, there were 20 members to the Rio Treaty: Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, El Salvador, Guatemala, Haiti, Honduras, Mexico, Panama, Paraguay, Peru, United States, Uruguay, and Venezuela. In 1964, Cuba was suspended, due to its support of communism. The purpose of the treaty was that in the event of an attack on a member, the other would be obliged to come to their defense, on request. Nowadays, aside from the occasional implementation, such as the US request for support after the 9/11 attacks, the treaty has fallen into disuse. The Rio Pact influenced the creation of the Vandenburg Resolution, and then, the
North Atlantic Treaty Organization The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental transnational military alliance of 32 member states—30 European and 2 North American. Established in the aftermat ...
(NATO).


Marshall Plan (1948)

In the wake of World War II, several European countries were considered to be in shambles with their economies collapsed. Cities were not able to produce enough goods to trade with resource-producing areas and unable to feed their citizens. The Soviet Union took control of Eastern Europe, which threatened Western Europe. The "
Marshall Plan The Marshall Plan (officially the European Recovery Program, ERP) was an American initiative enacted in 1948 to provide foreign aid to Western Europe. The United States transferred $13.3 billion (equivalent to $ in ) in economic recovery pr ...
" was suggested by US Secretary of State George Marshall in 1947. The intention was for the US to provide financially for Europe to rebuild its economic infrastructure. It would also help prevent further communist expansion by the Soviets.


Vandenburg Resolution (1948)

Arthur H. Vandenburg was a Republican
Senator A senate is a deliberative assembly, often the upper house or Legislative chamber, chamber of a bicameral legislature. The name comes from the Ancient Rome, ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior ...
, a former candidate for presidential nominee, and an avid supporter of
multilateralism In international relations, multilateralism refers to an alliance of multiple countries pursuing a common goal. Multilateralism is based on the principles of inclusivity, equality, and cooperation, and aims to foster a more peaceful, prosperous, an ...
. The Vandenburg Resolution was created in 1948, after the Rio Treaty and Marshall Plan. These previous agreements, supported by the Vandenburg Resolution, gave the US the idea to create a similar collective defense agreement with Europe to prevent Soviet control. It pushed the country to create NATO and demonstrated the importance of international agreements to the country. Vandenburg's draft resolution was introduced to the Senate on June 11, 1948, where it was approved.


NATO (1948)

The North Atlantic Treaty Organization is a collective defense treaty that was created to maintain peace in the North Atlantic region. The treaty included a few features, but the most prominent was the aspect of collective defense. At the time, the US and European nations were worried about the expansion of the Soviet Union. A collective defense agreement would protect nations from being defenseless in the face of a Soviet invasion. The initial idea for the organization was suggested in the Vandenburg Resolution. In 1948, the US, the UK, and Canada, began to brainstorm NATO. 12 members signed the treaty in 1949 in
Washington, DC Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from ...
, United States.


ANZUS (1951)

ANZUS The Australia, New Zealand, United States Security Treaty (ANZUS or ANZUS Treaty) is a collective security agreement between Australia, New Zealand, and the United States that was signed in 1951, and from which New Zealand has been partially su ...
, signed in 1951 between Australia, New Zealand, and the US, was not considered a mutual defense treaty, but was more akin to "mutual aid". Similar to the other treaties in the period of Pactomania, ANZUS was a collective security treaty, where in the event of an attack on one of the members, the conflict would be settled by peaceful means. The US deemed the idea unnecessary until the three nations shared their concerns regarding the spread of communism. The idea for the alliance was proposed by the US toward Australia, and was extended to New Zealand. The alliance has never been formally concluded, but in 1984, when New Zealand banned
nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear exp ...
s, the United States cut ties, treaty-wise, with New Zealand.


Treaty of Peace with Japan and US-Japan Security Treaty (1951)

The Japanese Peace Treaty was created after World War II to end hostilities with Japan. It also settled some land disputes with China, Japan, the Soviet Union, and the United States, and compensate people who were harmed in the war. However, it did not guarantee that foreign military occupation would leave Japan. It was signed in
San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, California, United States on September 8, 1951. Shortly after that, the US and Japan created a mutual security treaty.


US-Republic of the Philippines Mutual Defense Treaty (1951)

This treaty was made to maintain peace in the Philippines and surrounding Pacific region. It is a bilateral defense agreement, denoting that if either of the nations were to be put in danger, the other would be allowed to use military force to come to their aid. The US and the Philippines have been allies and maintained the treaty since it was created. It is one of the longest-lasting mutual defense treaties in the world.


US-Republic of Korea Mutual Defense Treaty (1953)

The US-Republic of Korea Mutual Defense Treaty is a bilateral defense agreement between the US and South Korea. Similar to ANZUS, if either of the members faced conflict, the other would defend them using peaceful methods, including defensive military approaches. The treaty was signed in 1953 following the
Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...
. The purpose is to offer South Korea protection from the two nations’ common enemy, the Democratic People's Republic of Korea (DPRK).


SEATO (1954)

The Southeast Asia Treaty Organization (SEATO), also known as the Manila Pact, was a defense treaty made between several countries inside and outside of Southeast Asia. Its purpose was to protect against the spread of communism in Southeast Asia and to help improve conditions in the region.The original members included the United States, France, Great Britain, New Zealand, Australia, the Philippines, and Thailand. There are also "observer" countries, who were still protected under the pact, but could not influence it in other ways. The organization was officially created in
Manila Manila, officially the City of Manila, is the Capital of the Philippines, capital and second-most populous city of the Philippines after Quezon City, with a population of 1,846,513 people in 2020. Located on the eastern shore of Manila Bay on ...
, Philippines in 1955, hence the name. Its headquarters were located in
Bangkok Bangkok, officially known in Thai language, Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies in the Chao Phraya River delta in central Thailand and has an estim ...
, Thailand. SEATO split in 1977.


Sino-American Mutual Defense Treaty (1954)

A mutual defense alliance between the US and
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
existed from 1955 until its unilateral nullification by President
Jimmy Carter James Earl Carter Jr. (October 1, 1924December 29, 2024) was an American politician and humanitarian who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Party ...
in 1979 as the US recognized the communist mainland. The
US Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all Federal tribunals in the United States, U.S. federal court cases, and over Stat ...
affirmed the president's right to nullify the treaty in '' Goldwater v. Carter''. Following its nullification, the treaty was supplanted by the
Taiwan Relations Act The Taiwan Relations Act (TRA; ) is an Act of Congress, act of the United States Congress. Since the Joint Communiqué on the Establishment of Diplomatic Relations, formal recognition of the China, People's Republic of China, the Act has defined ...
, passed by Congress in 1979.


METO (1955)

The Middle East Treaty Organization (METO), also known as the Baghdad Pact, was a mutual security treaty to contribute to peace in the Middle East. The US produced the idea for the pact, but remained an observer to it for the duration of the pact's existence. The title of the treaty has been changed from METO and was relocated and renamed the Central Treaty Organization (CENTO) after tensions between the organization and
Arab states The Arab world ( '), formally the Arab homeland ( '), also known as the Arab nation ( '), the Arabsphere, or the Arab states, comprises a large group of countries, mainly located in West Asia and North Africa. While the majority of people in ...
, particularly Iraq. After the overthrowing of the
Shah Shāh (; ) is a royal title meaning "king" in the Persian language.Yarshater, Ehsa, ''Iranian Studies'', vol. XXII, no. 1 (1989) Though chiefly associated with the monarchs of Iran, it was also used to refer to the leaders of numerous Per ...
in the
Iranian Revolution The Iranian Revolution (, ), also known as the 1979 Revolution, or the Islamic Revolution of 1979 (, ) was a series of events that culminated in the overthrow of the Pahlavi dynasty in 1979. The revolution led to the replacement of the Impe ...
, CENTO ended in 1979.


See also

*
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
*
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
*
George Marshall George Catlett Marshall Jr. (31 December 1880 – 16 October 1959) was an American army officer and statesman. He rose through the United States Army to become Chief of Staff of the United States Army, Chief of Staff of the U.S. Army under pres ...
*
John Foster Dulles John Foster Dulles (February 25, 1888 – May 24, 1959) was an American politician, lawyer, and diplomat who served as United States secretary of state under President Dwight D. Eisenhower from 1953 until his resignation in 1959. A member of the ...
*
Arthur Vandenberg Arthur Hendrick Vandenberg Sr. (March 22, 1884April 18, 1951) was an American politician who served as a United States senator from Michigan from 1928 to 1951. A member of the Republican Party, he participated in the creation of the United Nat ...
*
Harry Truman Harry S. Truman (May 8, 1884December 26, 1972) was the 33rd president of the United States, serving from 1945 to 1953. As the 34th vice president in 1945, he assumed the presidency upon the death of Franklin D. Roosevelt that year. Subsequen ...
*
Dwight Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was the 34th president of the United States, serving from 1953 to 1961. During World War II, he was Supreme Commander of the Allied Expeditionar ...
*
United Nations The United Nations (UN) is the Earth, global intergovernmental organization established by the signing of the Charter of the United Nations, UN Charter on 26 June 1945 with the stated purpose of maintaining international peace and internationa ...
*
Rio Treaty The Inter-American Treaty of Reciprocal Assistance (commonly known as the Rio Treaty, the Rio Pact, the Treaty of Reciprocal Assistance, or by the Spanish-language acronym TIAR from ''Tratado Interamericano de Asistencia Recíproca'') is an inter ...
*
Marshall Plan The Marshall Plan (officially the European Recovery Program, ERP) was an American initiative enacted in 1948 to provide foreign aid to Western Europe. The United States transferred $13.3 billion (equivalent to $ in ) in economic recovery pr ...
* Vandenberg resolution *
NATO The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental organization, intergovernmental Transnationalism, transnational military alliance of 32 Member states of NATO, member s ...
* US-Philippines Mutual Defense Treaty *
Treaty of San Francisco The , also called the , re-established peaceful relations between Japan and the Allied Powers on behalf of the United Nations by ending the legal state of war, military occupation and providing for redress for hostile actions up to and inclu ...
* US-Japan Security Alliance *
ANZUS The Australia, New Zealand, United States Security Treaty (ANZUS or ANZUS Treaty) is a collective security agreement between Australia, New Zealand, and the United States that was signed in 1951, and from which New Zealand has been partially su ...
* Mutual Defense Treaty (United States–South Korea) * SEATO * NEATO * METO


References

{{reflist Cold War treaties Political history of the United States Cold War alliances and military strategy *