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The North Atlantic Treaty Organization (NATO ; , OTAN), also called the North Atlantic Alliance, is an intergovernmental transnational
military alliance A military alliance is a formal Alliance, agreement between nations that specifies mutual obligations regarding national security. In the event a nation is attacked, members of the alliance are often obligated to come to their defense regardless ...
of 32
member states A member state is a state that is a member of an international organization or of a federation or confederation. Since the World Trade Organization (WTO) and the International Monetary Fund (IMF) include some members that are not sovereign states ...
—30 European and 2 North American. Established in the
aftermath of World War II The aftermath of World War II saw the rise of two global superpowers, the United States (U.S.) and the Soviet Union (U.S.S.R.). The aftermath of World War II was also defined by the rising threat of nuclear warfare, the creation and implementati ...
, the organization implements the
North Atlantic Treaty The North Atlantic Treaty, also known as the Washington Treaty, forms the legal basis of, and is implemented by, the North Atlantic Treaty Organization (NATO). The treaty was signed in Washington, D.C., on 4 April 1949. Background The treat ...
, signed in
Washington, D.C. 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. The city is on the Potomac River, across from Virginia, and shares land borders with ...
, on 4 April 1949. NATO is a
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 ...
system: its independent member states agree to defend each other against attacks by third parties. During 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 ...
, NATO operated as a check on the threat posed by 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 ...
. The alliance remained in place after the
dissolution of the Soviet Union The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
and the
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
, and has been involved in military operations in the
Balkans The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throug ...
, 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 ...
,
South Asia South Asia is the southern Subregion#Asia, subregion of Asia that is defined in both geographical and Ethnicity, ethnic-Culture, cultural terms. South Asia, with a population of 2.04 billion, contains a quarter (25%) of the world's populatio ...
, and
Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...
. The organization's motto is . The organization's strategic concepts include
deterrence Deterrence may refer to: * Deterrence theory, a theory of war, especially regarding nuclear weapons * Deterrence (penology), a theory of justice * Deterrence (psychology) Deterrence in relation to criminal offending is the idea or penology, t ...
. NATO's main headquarters are located in
Brussels Brussels, officially the Brussels-Capital Region, (All text and all but one graphic show the English name as Brussels-Capital Region.) is a Communities, regions and language areas of Belgium#Regions, region of Belgium comprising #Municipalit ...
, Belgium, while NATO's military headquarters are near
Mons, Belgium Mons (; German and , ; Walloon language, Walloon and ) is a City status in Belgium, city and Municipalities of Belgium, municipality of Wallonia, and the capital of the Hainaut Province, province of Hainaut, Belgium. Mons was made into a fortifi ...
. The alliance has increased its
NATO Response Force The NATO Response Force (NRF) is a high-readiness NATO rapid deployment force comprising land, sea, air, and special forces units capable of being deployed quickly within short notice. The NRF comprises more than 500,000 troops. Its forces inc ...
deployments in Eastern Europe, and the combined militaries of all NATO members include around 3.5 million soldiers and personnel. All member states together cover an area of with a population of about 973 million people. Their combined military spending constituted around 55 percent of the global nominal total. Moreover, members have agreed to reach or maintain the target defence spending of at least two percent of their
GDP Gross domestic product (GDP) is a monetary measure of the total market value of all the final goods and services produced and rendered in a specific time period by a country or countries. GDP is often used to measure the economic performance o ...
by 2024. NATO formed with twelve founding members and has added new members ten times, most recently when
Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...
joined the alliance on 7 March 2024. In addition, NATO recognizes
Bosnia and Herzegovina Bosnia and Herzegovina, sometimes known as Bosnia-Herzegovina and informally as Bosnia, is a country in Southeast Europe. Situated on the Balkans, Balkan Peninsula, it borders Serbia to the east, Montenegro to the southeast, and Croatia to th ...
,
Georgia Georgia most commonly refers to: * Georgia (country), a country in the South Caucasus * Georgia (U.S. state), a state in the southeastern United States Georgia may also refer to: People and fictional characters * Georgia (name), a list of pe ...
, and
Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...
as aspiring members. Enlargement has led to tensions with non-member
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
, one of the 18 additional countries participating in NATO's
Partnership for Peace The Partnership for Peace (PfP; ) is a North Atlantic Treaty Organization (NATO) program aimed at creating trust and cooperation between the member states of NATO and other states mostly in Europe, including post-Soviet states; 18 states are ...
programme. Another 35 countries and three international organizations are actively involved in institutionalized dialogue programmes with NATO.


History


20th century

NATO has its roots in the
Atlantic Charter The Atlantic Charter was a statement issued on 14 August 1941 that set out American and British goals for the world after the end of World War II, months before the US officially entered the war. The joint statement, later dubbed the Atlantic C ...
, a 1941 agreement between the United States and United Kingdom. The Charter laid out a framework for international cooperation without territorial expansion after
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 ...
. On 4 March 1947, the Treaty of Dunkirk was signed by France and the United Kingdom during the
aftermath of World War II The aftermath of World War II saw the rise of two global superpowers, the United States (U.S.) and the Soviet Union (U.S.S.R.). The aftermath of World War II was also defined by the rising threat of nuclear warfare, the creation and implementati ...
and the start of the Cold War as a ''Treaty of Alliance and Mutual Assistance'' in the event of possible attacks by Germany. In March 1948, this alliance was expanded in the
Treaty of Brussels The Treaty of Brussels, also referred to as the Brussels Pact, was the founding treaty of the Western Union (WU) between 1948 and 1954, when it was amended as the Modified Brussels Treaty (MTB) and served as the founding treaty of the Western Eu ...
to include the
Benelux The Benelux Union (; ; ; ) or Benelux is a politico-economic union, alliance and formal international intergovernmental cooperation of three neighbouring states in Western Europe: Belgium, the Netherlands, and Luxembourg. The name is a portma ...
countries, forming the Brussels Treaty Organization, commonly known as the
Western Union The Western Union Company is an American multinational financial services corporation headquartered in Denver, Denver, Colorado. Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, the co ...
. Talks for a wider military alliance, which could include North America, also began that month in the United States, where their foreign policy under 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 ...
set out in 1947 promoted international solidarity against actions they saw as communist aggression, such as the February 1948 coup d'état in Czechoslovakia. These talks resulted in the signature of the
North Atlantic Treaty The North Atlantic Treaty, also known as the Washington Treaty, forms the legal basis of, and is implemented by, the North Atlantic Treaty Organization (NATO). The treaty was signed in Washington, D.C., on 4 April 1949. Background The treat ...
on 4 April 1949 by the member states of the Western Union plus the United States, Canada, Portugal, Italy, Norway, Denmark, and Iceland. Canadian diplomat
Lester B. Pearson Lester Bowles Pearson (23 April 1897 – 27 December 1972) was a Canadian politician, diplomat, statesman, and scholar who served as the 14th prime minister of Canada from 1963 to 1968. He also served as Leader of the Liberal Party of C ...
was a key author and drafter of the treaty. The North Atlantic Treaty was largely dormant until 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 ...
initiated the establishment of NATO to implement it with an integrated military structure. This included the formation of
Supreme Headquarters Allied Powers Europe The Supreme Headquarters Allied Powers Europe (SHAPE) is the military headquarters of the North Atlantic Treaty Organization's (NATO) Allied Command Operations (ACO) that commands all NATO operations worldwide. SHAPE is situated in the villag ...
(SHAPE) in 1951, which adopted many of the Western Union's military structures and plans, including their agreements on standardizing equipment and agreements on stationing foreign military forces in European countries. In 1952, the post of
Secretary General of NATO The secretary general of NATO is the chief civil servant of the NATO, North Atlantic Treaty Organization (NATO), an intergovernmental military alliance with 32 member states. The officeholder is an international diplomat responsible for coordinat ...
was established as the organization's chief civilian. That year also saw the first major NATO maritime exercises, Exercise Mainbrace and the accession of Greece and Turkey to the organization. Following the
London and Paris Conferences The London and Paris Conferences were two related conferences held in London and Paris during September–October 1954 to determine the status of West Germany. The talks concluded with the signing of the Paris Agreements (Paris Pacts, or Paris ...
,
West Germany West Germany was the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until German reunification, its reunification with East Germany on 3 October 1990. It is sometimes known as the Bonn Republi ...
was permitted to rearm militarily, as they joined NATO in May 1955, which was, in turn, a major factor in the creation of the Soviet-dominated
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
, delineating the two opposing sides of 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 ...
. The building of the
Berlin Wall The Berlin Wall (, ) was a guarded concrete Separation barrier, barrier that encircled West Berlin from 1961 to 1989, separating it from East Berlin and the East Germany, German Democratic Republic (GDR; East Germany). Construction of the B ...
in 1961 marked a height in Cold War tensions, when 400,000 US troops were stationed in Europe. Doubts over the strength of the relationship between the European states and the United States ebbed and flowed, along with doubts over the credibility of the NATO defence against a prospective Soviet invasion – doubts that led to the development of the independent French nuclear deterrent and the withdrawal of
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
from NATO's military structure in 1966. In 1982, the newly democratic Spain joined the alliance. The
Revolutions of 1989 The revolutions of 1989, also known as the Fall of Communism, were a revolutionary wave of liberal democracy movements that resulted in the collapse of most Communist state, Marxist–Leninist governments in the Eastern Bloc and other parts ...
in Europe led to a strategic re-evaluation of NATO's purpose, nature, tasks, and focus on the continent. In October 1990,
East Germany East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from Foundation of East Germany, its formation on 7 October 1949 until German reunification, its reunification with West Germany (FRG) on ...
became part of the Federal Republic of Germany and the alliance, and in November 1990, the alliance signed the
Treaty on Conventional Armed Forces in Europe The original Treaty on Conventional Armed Forces in Europe (CFE) was negotiated and concluded during the last years of the Cold War and established comprehensive limits on key categories of conventional military equipment in Europe (from the Atl ...
(CFE) in Paris with the Soviet Union. It mandated specific military reductions across the continent, which continued after the collapse of the
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
in February 1991 and the
dissolution of the Soviet Union The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
that December, which removed the ''de facto'' main adversaries of NATO. This began a drawdown of military spending and equipment in Europe. The CFE treaty allowed signatories to remove 52,000 pieces of conventional armaments in the following sixteen years, and allowed military spending by NATO's European members to decline by 28 percent from 1990 to 2015. In 1990, several Western leaders gave assurances to
Mikhail Gorbachev Mikhail Sergeyevich Gorbachev (2 March 1931 – 30 August 2022) was a Soviet and Russian politician who served as the last leader of the Soviet Union from 1985 to dissolution of the Soviet Union, the country's dissolution in 1991. He served a ...
that NATO would not expand further east, as revealed by memoranda of private conversations. In the 1990s, the organization extended its activities into political and humanitarian situations that had not formerly been NATO concerns. During the
breakup of Yugoslavia After a period of political and economic crisis in the 1980s, the constituent republics of the Socialist Federal Republic of Yugoslavia split apart in the early 1990s. Unresolved issues from the breakup caused a series of inter-ethnic Yugoslav ...
, the organization conducted its first military interventions in Bosnia from 1992 to 1995 and later Yugoslavia in 1999. Politically, the organization sought better relations with the newly autonomous
Central and Eastern Europe Central and Eastern Europe is a geopolitical term encompassing the countries in Baltic region, Northeast Europe (primarily the Baltic states, Baltics), Central Europe (primarily the Visegrád Group), Eastern Europe, and Southeast Europe (primaril ...
an states, and diplomatic forums for regional cooperation between NATO and its neighbours were set up during this post-Cold War period, including the
Partnership for Peace The Partnership for Peace (PfP; ) is a North Atlantic Treaty Organization (NATO) program aimed at creating trust and cooperation between the member states of NATO and other states mostly in Europe, including post-Soviet states; 18 states are ...
and the
Mediterranean Dialogue The Mediterranean Dialogue, first launched in 1994, is a forum of cooperation between NATO and seven countries of the Mediterranean. Its stated aim is "to create good relations and better mutual understanding and confidence throughout the region, p ...
initiative in 1994, the
Euro-Atlantic Partnership Council The Euro-Atlantic Partnership Council (EAPC) is a post–Cold War, North Atlantic Treaty Organization (NATO) institution. The EAPC is a multilateral forum created to improve relations between NATO and non-NATO countries in Europe and Central Asi ...
in 1997, and the NATO–Russia Permanent Joint Council in 1998. At the
1999 Washington summit 1999 was designated as the International Year of Older Persons. Events January * January 1 – The euro currency is established and the European Central Bank assumes its full powers. * January 3 – The Mars Polar Lander is lau ...
,
Hungary Hungary is a landlocked country in Central Europe. Spanning much of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia and ...
,
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
, and the
Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
officially joined NATO, and the organization also issued new guidelines for membership with individualized "
Membership Action Plan NATO is a military alliance of thirty-two European and North American countries that constitutes a system of collective defense. The process of joining the alliance is governed by Article 10 of the North Atlantic Treaty, which allows for the ...
s". These plans governed the subsequent addition of new alliance members.


21st century

Article 5 of the North Atlantic treaty The North Atlantic Treaty, also known as the Washington Treaty, forms the legal basis of, and is implemented by, the North Atlantic Treaty Organization (NATO). The treaty was signed in Washington, D.C., on 4 April 1949. Background The treat ...
, requiring member states to come to the aid of any member state subject to an armed attack, was invoked for the first and only time after the
September 11 attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
, after which troops were deployed to
Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan, is a landlocked country located at the crossroads of Central Asia and South Asia. It is bordered by Pakistan to the Durand Line, east and south, Iran to the Afghanistan–Iran borde ...
under the NATO-led
ISAF The International Security Assistance Force (ISAF) was a multinational military mission in Afghanistan from 2001 to 2014. It was established by United Nations Security Council Resolution 1386 according to the Bonn Agreement, which outlined t ...
. The organization has operated a range of additional roles since then, including sending trainers to Iraq, assisting in counter-piracy operations. The election of French president
Nicolas Sarkozy Nicolas Paul Stéphane Sarközy de Nagy-Bocsa ( ; ; born 28 January 1955) is a French politician who served as President of France from 2007 to 2012. In 2021, he was found guilty of having tried to bribe a judge in 2014 to obtain information ...
in 2007 led to a major reform of France's military position, culminating with the return to full membership on 4 April 2009, which also included France rejoining the
NATO Military Command Structure The structure of the North Atlantic Treaty Organization (NATO) is complex and multi-faceted. The decision-making body is the North Atlantic Council (NAC), and the member state representatives also sit on the Defence Planning Committee (NATO), Defe ...
, while maintaining an independent nuclear deterrent. The 2014 Russian annexation of Crimea led to strong condemnation by all NATO members, and was one of the seven times that Article 4, which calls for consultation among NATO members, has been invoked. Prior times included during the
Iraq War The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which ...
and Syrian civil war. At the 2014 Wales summit, the leaders of NATO's member states formally committed for the first time to spend the equivalent of at least two percent of their
gross domestic product Gross domestic product (GDP) is a monetary measure of the total market value of all the final goods and services produced and rendered in a specific time period by a country or countries. GDP is often used to measure the economic performanc ...
s on defence by 2024, which had previously been only an informal guideline. At the
2016 Warsaw summit The 2016 Warsaw Summit of the North Atlantic Treaty Organization (NATO) was the 26th formal summit of the heads of state and heads of government of the North Atlantic Treaty Organization, held at the National Stadium, Warsaw, National Stadium i ...
, NATO countries agreed on the creation of
NATO Enhanced Forward Presence Enhanced Forward Presence (EFP) is a NATO-allied forward-deployed defense and deterrence military force in Northern, Central and Eastern Europe. This posture in Northern Europe through Estonia, Latvia, and Lithuania and in Central Europe through ...
, which deployed four multinational battalion-sized battlegroups in Estonia, Latvia, Lithuania, and Poland. Before and during the
2022 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 ...
, several NATO countries sent ground troops, warships and fighter aircraft to reinforce the alliance's eastern flank, and multiple countries again invoked Article 4. In March 2022, NATO leaders met at Brussels for an extraordinary summit which also involved
Group of Seven The Group of Seven (G7) is an Intergovernmentalism, intergovernmental political and economic forum consisting of Canada, France, Germany, Italy, Japan, the United Kingdom and the United States; additionally, the European Union (EU) is a "non- ...
and European Union leaders. NATO member states agreed to establish four additional battlegroups in Bulgaria, Hungary, Romania, and Slovakia, and elements of the
NATO Response Force The NATO Response Force (NRF) is a high-readiness NATO rapid deployment force comprising land, sea, air, and special forces units capable of being deployed quickly within short notice. The NRF comprises more than 500,000 troops. Its forces inc ...
were activated for the first time in NATO's history. As of June 2022, NATO had deployed 40,000 troops along its Eastern flank to deter Russian aggression. More than half of this number have been deployed in Bulgaria, Romania, Hungary, Slovakia, and Poland, which five countries muster a considerable combined ex-NATO force of 259,000 troops. To supplement Bulgaria's Air Force, Spain sent
Eurofighter Typhoon The Eurofighter Typhoon is a European multinational twin-engine, supersonic, canard delta wing, multirole fighter. The Typhoon was designed originally as an air-superiority fighter and is manufactured by a consortium of Airbus, BAE Syste ...
s, the Netherlands sent eight F-35 attack aircraft, and additional French and US attack aircraft would arrive soon as well. In 2025, Germany stationed a full armoured brigade in Lithuania.


Military operations


Early operations

No military operations were conducted by NATO during the Cold War. Following the end of the Cold War, the first operations, ''Anchor Guard'' in 1990 and ''Ace Guard'' in 1991, were prompted by the
Iraqi invasion of Kuwait The Iraqi invasion of Kuwait, codenamed Project 17, began on 2 August 1990 and marked the beginning of the Gulf War. After defeating the State of Kuwait on 4 August 1990, Iraq went on to militarily occupy the country for the next seven months ...
. Airborne early warning aircraft were sent to provide coverage of southeastern Turkey, and later a quick-reaction force was deployed to the area.


Bosnia and Herzegovina intervention

The
Bosnian War The Bosnian War ( / Рат у Босни и Херцеговини) was an international armed conflict that took place in Republic of Bosnia and Herzegovina, Bosnia and Herzegovina between 1992 and 1995. Following several earlier violent incid ...
began in 1992, as a result of the
breakup of Yugoslavia After a period of political and economic crisis in the 1980s, the constituent republics of the Socialist Federal Republic of Yugoslavia split apart in the early 1990s. Unresolved issues from the breakup caused a series of inter-ethnic Yugoslav ...
. The deteriorating situation led to United Nations Security Council Resolution 816 on 9 October 1992, authorizing its member-states to enforce a previously declared
no-fly zone A no-fly zone, also known as a no-flight zone (NFZ), or air exclusion zone (AEZ), is a territory or area established by a military power over which certain aircraft are not permitted to fly. Such zones are usually set up in an enemy power's terri ...
under the
United Nations Protection Force The United Nations Protection Force (UNPROFOR; also known by its French acronym FORPRONU: ''Force de Protection des Nations Unies'') was the first United Nations peacekeeping force in Croatia and in Bosnia and Herzegovina during the Yugoslav War ...
over central Bosnia and Herzegovina. NATO complied and started enforcing the ban on 12 April 1993 with
Operation Deny Flight Operation Deny Flight was a North Atlantic Treaty Organization (NATO) operation that began on 12 April 1993 as the enforcement of a United Nations (UN) no-fly zone over Bosnia and Herzegovina. The United Nations and NATO later expanded the ...
. From June 1993 until October 1996,
Operation Sharp Guard Operation Sharp Guard was a multi-year joint naval blockade in the Adriatic Sea by NATO and the Western European Union on shipments to the former Yugoslavia. Warships and maritime patrol aircraft from 14 countries were involved in searching for a ...
added maritime enforcement of the
arms embargo An arms embargo is a restriction or a set of sanctions that applies either solely to weaponry or also to "dual-use technology." An arms embargo may serve one or more purposes: * to signal disapproval of the behavior of a certain actor * to maintain ...
and
economic sanctions Economic sanctions or embargoes are Commerce, commercial and Finance, financial penalties applied by states or institutions against states, groups, or individuals. Economic sanctions are a form of Coercion (international relations), coercion tha ...
against the
Federal Republic of Yugoslavia The State Union of Serbia and Montenegro or simply Serbia and Montenegro, known until 2003 as the Federal Republic of Yugoslavia and commonly referred to as FR Yugoslavia (FRY) or simply Yugoslavia, was a country in Southeast Europe locate ...
. On 28 February 1994, NATO took its first wartime action by shooting down four Bosnian Serb aircraft violating the no-fly zone. On 10 and 11 April 1994, the United Nations Protection Force called in air strikes to protect the
Goražde Goražde ( sr-cyrl, Горажде, ) is a city and the administrative center of the Bosnian-Podrinje Canton Goražde of the Federation of Bosnia and Herzegovina, an entity of Bosnia and Herzegovina. It is situated on the banks of the Drina rive ...
safe area, resulting in the bombing of a Bosnian Serb military command outpost near Goražde by two US
F-16 The General Dynamics F-16 Fighting Falcon is an American single-engine supersonic multirole fighter aircraft originally developed by General Dynamics for the United States Air Force (USAF). Designed as an air superiority day fighter, it e ...
jets acting under NATO direction. In retaliation, Serbs took 150 U.N. personnel hostage on 14 April. On 16 April a British Sea Harrier was shot down over Goražde by Serb forces. In August 1995, a two-week NATO bombing campaign,
Operation Deliberate Force Operation Deliberate Force was a sustained air campaign conducted by NATO, in concert with the UNPROFOR ground operations, to undermine the military capability of the Army of Republika Srpska (VRS), which had threatened and attacked UN-desig ...
, began against the
Army of the Republika Srpska The Army of Republika Srpska (; ВРС/VRS), commonly referred to in English as the Bosnian Serb Army, was the military of Republika Srpska, the self-proclaimed Serb secessionist republic, a territory within the newly independent Bosnia and Herz ...
, after the
Srebrenica genocide The Srebrenica massacre, also known as the Srebrenica genocide, was the July 1995 genocidal killing of more than 8,000 Bosniak Muslim men and boys in and around the town of Srebrenica during the Bosnian War. It was mainly perpetrated by units ...
. Further NATO air strikes helped bring the
Yugoslav Wars The Yugoslav Wars were a series of separate but related#Naimark, Naimark (2003), p. xvii. ethnic conflicts, wars of independence, and Insurgency, insurgencies that took place from 1991 to 2001 in what had been the Socialist Federal Republic of ...
to an end, resulting in the
Dayton Agreement The General Framework Agreement for Peace in Bosnia and Herzegovina, also known as the Dayton Agreement or the Dayton Accords ( sh-Latn-Cyrl, Dejtonski mirovni sporazum, Дејтонски мировни споразум), and colloquially kn ...
in November 1995. As part of this agreement, NATO deployed a UN-mandated peacekeeping force, under
Operation Joint Endeavor The Implementation Force (IFOR) was a NATO-led multinational peace enforcement force in Bosnia and Herzegovina under a one-year mandate from 20 December 1995 to 20 December 1996 under the codename ''Operation Joint Endeavour''. Background In ...
, named
IFOR The Implementation Force (IFOR) was a NATO-led multinational peace enforcement force in Bosnia and Herzegovina under a one-year mandate from 20 December 1995 to 20 December 1996 under the codename ''Operation Joint Endeavour''. Background In ...
. Almost 60,000 NATO troops were joined by forces from non-NATO countries in this peacekeeping mission. This transitioned into the smaller
SFOR The Stabilisation Force (SFOR) was a NATO-led multinational peacekeeping force deployed to Bosnia and Herzegovina after the Bosnian War. Although SFOR was led by NATO, several non-NATO countries contributed troops. It was replaced by EUFOR Alt ...
, which started with 32,000 troops initially and ran from December 1996 until December 2004, when operations were then passed onto the European Union Force Althea. Following the lead of its member states, NATO began to award a service medal, the
NATO Medal The NATO Medal is an international military decoration which is awarded to various militaries of the world under the authority of the North Atlantic Treaty Organization (NATO). It is manufactured by Eekelers-Centini Intl, of Hemiksem, Belgium. Ba ...
, for these operations.


Kosovo intervention

In an effort to stop
Slobodan Milošević Slobodan Milošević ( sr-Cyrl, Слободан Милошевић, ; 20 August 1941 – 11 March 2006) was a Yugoslav and Serbian politician who was the President of Serbia between 1989 and 1997 and President of the Federal Republic of Yugos ...
's Serbian-led crackdown on KLA separatists and Albanian civilians in
Kosovo Kosovo, officially the Republic of Kosovo, is a landlocked country in Southeast Europe with International recognition of Kosovo, partial diplomatic recognition. It is bordered by Albania to the southwest, Montenegro to the west, Serbia to the ...
, the
United Nations 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 ...
passed Resolution 1199 on 23 September 1998 to demand a ceasefire. Negotiations under US Special Envoy
Richard Holbrooke Richard Charles Albert Holbrooke (April 24, 1941 – December 13, 2010) was an American diplomat and author. He was the only person to have held the position of Assistant Secretary of State for two different regions of the world (Asia from 1977 ...
broke down on 23 March 1999, and he handed the matter to NATO, which acted on protecting regional security and started a 78-day bombing campaign on 24 March 1999. Operation Allied Force targeted the military capabilities of what was then the
Federal Republic of Yugoslavia The State Union of Serbia and Montenegro or simply Serbia and Montenegro, known until 2003 as the Federal Republic of Yugoslavia and commonly referred to as FR Yugoslavia (FRY) or simply Yugoslavia, was a country in Southeast Europe locate ...
. During the crisis, NATO also deployed one of its international reaction forces, the
ACE Mobile Force (Land) The Allied Command Europe Mobile Force (AMF) was a small NATO quick reaction force, headquartered at Heidelberg, Germany, active from 1960 to 2002. It formed part of Allied Command Europe (ACE), headquartered at SHAPE at Casteau, Belgium. The lan ...
, to Albania as the Albania Force (AFOR), to deliver humanitarian aid to refugees from Kosovo. The campaign was and has been criticized over its civilian casualties, including the bombing of the Chinese embassy in Belgrade, and over whether it had legitimacy. The US, the UK, and most other NATO countries opposed efforts to require the UN Security Council to approve NATO military strikes, such as the action against Serbia in 1999, while France and some others claimed that the alliance needed UN approval. The US/UK side claimed that this would undermine the authority of the alliance, and they noted that Russia and China would have exercised their Security Council vetoes to block the strike on
Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...
, and could do the same in future conflicts where NATO intervention was required, thus nullifying the entire potency and purpose of the organization. Recognizing the post-Cold War military environment, NATO adopted the Alliance Strategic Concept during its Washington summit in April 1999 that emphasized conflict prevention and crisis management. Milošević finally accepted the terms of an international peace plan on 3 June 1999, ending the
Kosovo War The Kosovo War (; sr-Cyrl-Latn, Косовски рат, Kosovski rat) was an armed conflict in Kosovo that lasted from 28 February 1998 until 11 June 1999. It ...
. On 11 June, Milošević further accepted UN resolution 1244, under the mandate of which NATO then helped establish the
KFOR KFOR may refer to: * KFOR (AM), a radio station (1240 AM) licensed to Lincoln, Nebraska, United States, * KFOR-TV, a television station (channel 4 analog/27 digital) licensed to Oklahoma City, Oklahoma, United States, * KFOR-TV (Nebraska), a defun ...
peacekeeping force. Nearly one million refugees had fled Kosovo, and part of KFOR's mandate was to protect the humanitarian missions, in addition to deterring violence. In August–September 2001, the alliance also mounted
Operation Essential Harvest Operation Essential Harvest (or Task Force Harvest) was a deployment mission in the Republic of Macedonia by NATO, officially launched on August 22, 2001, and effectively started on August 27. Because national contributions were larger than expecte ...
, a mission disarming ethnic Albanian militias in the Republic of Macedonia. , around 4,500 KFOR soldiers, representing 27 countries, continue to operate in the area.


War in Afghanistan

The
September 11 attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
in the United States caused NATO to invoke Article 5 of the NATO Charter for the first time in the organization's history. The Article states that an attack on any member shall be considered to be an attack on all. The invocation was confirmed on 4 October 2001 when NATO determined that the attacks were indeed eligible under the terms of the North Atlantic Treaty. The eight official actions taken by NATO in response to the attacks included
Operation Eagle Assist Operation Eagle Assist was a NATO operation where AWACS aircraft patrolled the skies over the United States following the September 11 attacks. On October 4, about a month after the September 11 attacks, the North Atlantic Council decided to op ...
and
Operation Active Endeavour Operation Active Endeavour was a Navy, maritime operation of the North Atlantic Treaty Organization. It operated in the Mediterranean Sea and was designed to prevent the movement of terrorists or weapons of mass destruction. It had collateral ben ...
, a naval operation in the Mediterranean Sea designed to prevent the movement of terrorists or weapons of mass destruction, and to enhance the security of shipping in general, which began on 4 October 2001. The alliance showed unity: on 16 April 2003, NATO agreed to take command of the
International Security Assistance Force The International Security Assistance Force (ISAF) was a multinational military mission in Afghanistan from 2001 to 2014. It was established by United Nations Security Council United Nations Security Council Resolution 1386, Resolution 1386 ac ...
(ISAF), which included troops from 42 countries. The decision came at the request of Germany and the Netherlands, the two countries leading ISAF at the time of the agreement, and all nineteen NATO ambassadors approved it unanimously. The handover of control to NATO took place on 11 August, and marked the first time in NATO's history that it took charge of a mission outside the north Atlantic area. ISAF was initially charged with securing
Kabul Kabul is the capital and largest city of Afghanistan. Located in the eastern half of the country, it is also a municipality, forming part of the Kabul Province. The city is divided for administration into #Districts, 22 municipal districts. A ...
and surrounding areas from the
Taliban , leader1_title = Supreme Leader of Afghanistan, Supreme leaders , leader1_name = {{indented plainlist, * Mullah Omar{{Natural Causes{{nbsp(1994–2013) * Akhtar Mansour{{Assassinated (2015–2016) * Hibatullah Akhundzada (2016–present) ...
,
al Qaeda , image = Flag of Jihad.svg , caption = Jihadist flag, Flag used by various al-Qaeda factions , founder = Osama bin Laden{{Assassinated, Killing of Osama bin Laden , leaders = {{Plainlist, * Osama bin Lad ...
and factional warlords, so as to allow for the establishment of the
Afghan Transitional Administration Afghan or Afgan may refer to: Related to Afghanistan *Afghans, historically refers to the Pashtun people. It is both an ethnicity and nationality. Ethnicity wise, it refers to the Pashtuns. In modern terms, it means both the citizens of Afghanist ...
headed by
Hamid Karzai Hamid Karzai (born 24 December 1957) is an Afghan politician who served as the fourth president of Afghanistan from 2002 to 2014, including as the first president of the Islamic Republic of Afghanistan from 2004 to 2014. He previously served a ...
. In October 2003, the UN Security Council authorized the expansion of the ISAF mission throughout Afghanistan, and ISAF subsequently expanded the mission in four main stages over the whole of the country. On 31 July 2006, the ISAF additionally took over military operations in the south of Afghanistan from a US-led anti-terrorism coalition. Due to the intensity of the fighting in the south, in 2011 France allowed a squadron of Mirage 2000 fighter/attack aircraft to be moved into the area, to
Kandahar Kandahar is a city in Afghanistan, located in the south of the country on Arghandab River, at an elevation of . It is Afghanistan's second largest city, after Kabul, with a population of about 614,118 in 2015. It is the capital of Kandahar Pro ...
, in order to reinforce the alliance's efforts. During its 2012 Chicago Summit, NATO endorsed a plan to end the Afghanistan war and to remove the NATO-led ISAF Forces by the end of December 2014. ISAF was disestablished in December 2014 and replaced by the follow-on training
Resolute Support Mission Resolute Support Mission (RSM) or Operation Resolute Support was a NATO-led multinational mission in Afghanistan. It began on 1 January 2015 as the successor to the International Security Assistance Force (ISAF), which was completed on 28 Dece ...
. On 14 April 2021, NATO Secretary General
Jens Stoltenberg Jens Stoltenberg (; born 16 March 1959) is a Norwegian politician from the Labour Party. Since 2025, he has been the Minister of Finance in the Støre Cabinet. He has previously been the prime minister of Norway and secretary general of NATO. ...
said the alliance had agreed to start withdrawing its troops from Afghanistan by 1 May. Soon after the withdrawal of NATO troops started, the Taliban launched an offensive against the Afghan government, quickly advancing in front of collapsing
Afghan Armed Forces The Afghan Armed Forces, officially the Armed Forces of the Islamic Emirate of Afghanistan (, ) and also referred to as the Islamic Emirate Armed Forces, is the military of Afghanistan, commanded by the Taliban government from 1997 to 2001 and a ...
. By 15 August 2021, Taliban militants controlled the vast majority of Afghanistan and had encircled the capital city of
Kabul Kabul is the capital and largest city of Afghanistan. Located in the eastern half of the country, it is also a municipality, forming part of the Kabul Province. The city is divided for administration into #Districts, 22 municipal districts. A ...
. Some politicians in NATO member states have described the chaotic withdrawal of Western troops from Afghanistan and the collapse of the Afghan government as the greatest debacle that NATO has suffered since its founding.


Iraq training mission

In August 2004, during the
Iraq War The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which ...
, NATO formed the
NATO Training Mission – Iraq The NATO Training Mission-Iraq (NTM-I) was established in 2004 at the request of the, at that point unelected, Iraqi Interim Government under the provisions of UN Security Council Resolution 1546. The aim of NTM-I was to assist in the developm ...
, a training mission to assist the Iraqi security forces in conjunction with the US-led MNF-I. The NATO Training Mission-Iraq (NTM-I) was established at the request of the
Iraqi Interim Government The Iraqi Interim Government was created by the United States and its coalition allies as a caretaker government to govern Iraq until the drafting of the new constitution following the National Assembly election conducted on January 30, 2005 ...
under the provisions of United Nations Security Council Resolution 1546. The aim of NTM-I was to assist in the development of Iraqi security forces training structures and institutions so that Iraq can build an effective and sustainable capability that addresses the needs of the country. NTM-I was not a combat mission but is a distinct mission, under the political control of the
North Atlantic Council The North Atlantic Council (NAC) is the principal political decision-making body of the North Atlantic Treaty Organization (NATO), consisting of permanent representatives of its member countries. It was established by wikisource:North Atlantic ...
. Its operational emphasis was on training and mentoring. The activities of the mission were coordinated with Iraqi authorities and the US-led Deputy Commanding General Advising and Training, who was also dual-hatted as the Commander of NTM-I. The mission officially concluded on 17 December 2011. Turkey invoked the first Article 4 meetings in 2003 at the start of the
Iraq War The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which ...
. Turkey also invoked this article twice in 2012 during the Syrian civil war, after the downing of an unarmed Turkish F-4 reconnaissance jet, and after a mortar was fired at Turkey from Syria, and again in 2015 after threats by
Islamic State of Iraq and the Levant The Islamic State (IS), also known as the Islamic State of Iraq and the Levant (ISIL), the Islamic State of Iraq and Syria (ISIS) and Daesh, is a transnational Salafi jihadist organization and unrecognized quasi-state. IS occupied signi ...
to its territorial integrity.


Gulf of Aden anti-piracy

In 2008 the
United Nations Secretary-General The secretary-general of the United Nations (UNSG or UNSECGEN) is the chief administrative officer of the United Nations and head of the United Nations Secretariat, one of the United Nations System#Six principal organs, six principal organs of ...
called on member-states to protect the ships of , which was distributing aid as part of the
World Food Programme The World Food Programme (WFP) is an international organization within the United Nations that provides food assistance worldwide. It is the world's largest humanitarian organization and the leading provider of school meals. Founded in 1961 ...
mission in Somalia. The
North Atlantic Council The North Atlantic Council (NAC) is the principal political decision-making body of the North Atlantic Treaty Organization (NATO), consisting of permanent representatives of its member countries. It was established by wikisource:North Atlantic ...
and other countries, including Russia, China and South Korea, formed
Operation Ocean Shield Operation Ocean Shield was NATO's contribution to Operation Enduring Freedom – Horn of Africa (OEF-HOA), an anti-piracy initiative in the Indian Ocean, Guardafui Channel, Gulf of Aden and Arabian Sea. It follows the earlier Operation All ...
. The operation sought to dissuade and interrupt pirate attacks, protect vessels, and to increase the general level of security in the region. Beginning on 17 August 2009, NATO deployed warships in an operation to protect maritime traffic in the
Gulf of Aden The Gulf of Aden (; ) is a deepwater gulf of the Indian Ocean between Yemen to the north, the Arabian Sea to the east, Djibouti to the west, and the Guardafui Channel, the Socotra Archipelago, Puntland in Somalia and Somaliland to the south. ...
and the Indian Ocean from
Somali pirates Horn of Africa * Somali Peninsula, a region of East Africa, also known as "The Horn of Africa" * Somalis, an inhabitant or ethnicity associated with Greater Somali Region ** Greater Somalia ** Somali language, a Cushitic language ** Somali culture ...
, and help strengthen the navies and coast guards of regional states.


Libya intervention

During the Libyan Civil War, violence between protesters and the Libyan government under Colonel
Muammar Gaddafi Muammar Muhammad Abu Minyar al-Gaddafi (20 October 2011) was a Libyan military officer, revolutionary, politician and political theorist who ruled Libya from 1969 until Killing of Muammar Gaddafi, his assassination by Libyan Anti-Gaddafi ...
escalated, and on 17 March 2011 led to the passage of
United Nations Security Council Resolution 1973 Resolution 1973 was adopted by the United Nations Security Council on 17 March 2011 in response to the First Libyan Civil War. The resolution formed the legal basis for military intervention in the Libyan Civil War, demanding "an immediate ce ...
, which called for a ceasefire, and authorized military action to protect civilians. A coalition that included several NATO members began enforcing a no-fly zone over Libya shortly afterwards, beginning with
Opération Harmattan Opération Harmattan was the French participation in the 2011 military intervention in Libya. It was named for the Harmattan, which are hot dry winds that blow over the Sahara, mostly between November and March. The United States' counterpart t ...
by the
French Air Force The French Air and Space Force (, , ) is the air force, air and space force of the French Armed Forces. Formed in 1909 as the ("Aeronautical Service"), a service arm of the French Army, it became an independent military branch in 1934 as the Fr ...
on 19 March. On 20 March 2011, NATO states agreed on enforcing an arms embargo against Libya with
Operation Unified Protector Operation Unified Protector was a NATO operation in 2011 enforcing United Nations United Nations Security Council, Security Council United Nations Security Council resolution, resolutions United Nations Security Council Resolution 1970, 1970 and ...
using ships from NATO Standing Maritime Group 1 and Standing Mine Countermeasures Group 1, and additional ships and submarines from NATO members. They would "monitor, report and, if needed,
interdict In Catholic canon law, an interdict () is an ecclesiastical censure, or ban that prohibits certain persons or groups from participating in particular rites, or that the rites and services of the church are prohibited in certain territories for ...
vessels suspected of carrying illegal arms or
mercenaries A mercenary is a private individual who joins an War, armed conflict for personal profit, is otherwise an outsider to the conflict, and is not a member of any other official military. Mercenaries fight for money or other forms of payment rath ...
". On 24 March, NATO agreed to take control of the no-fly zone from the initial coalition, while command of targeting ground units remained with the coalition's forces. NATO began officially enforcing the UN resolution on 27 March 2011 with assistance from Qatar and the United Arab Emirates. By June, reports of divisions within the alliance surfaced as only eight of the 28 member states were participating in combat operations, resulting in a confrontation between US Defense Secretary
Robert Gates Robert Michael Gates (born September 25, 1943) is an American intelligence analyst and university president who served as the 22nd United States secretary of defense from 2006 to 2011. He was appointed by President George W. Bush and retained b ...
and countries such as Poland, Spain, the Netherlands, Turkey, and Germany with Gates calling on the latter to contribute more and the latter believing the organization has overstepped its mandate in the conflict. In his final policy speech in Brussels on 10 June, Gates further criticized allied countries in suggesting their actions could cause the demise of NATO. The German foreign ministry pointed to "a considerable ermancontribution to NATO and NATO-led operations" and to the fact that this engagement was highly valued by President Obama. While the mission was extended into September, Norway that day (10 June) announced it would begin scaling down contributions and complete withdrawal by 1 August. Earlier that week it was reported Danish air fighters were running out of bombs. The following week, the head of the
Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
said the country's operations in the conflict were not sustainable. By the end of the mission in October 2011, after the death of Colonel Gaddafi, NATO planes had flown about 9,500 strike sorties against pro-Gaddafi targets. A report from the organization
Human Rights Watch Human Rights Watch (HRW) is an international non-governmental organization that conducts research and advocacy on human rights. Headquartered in New York City, the group investigates and reports on issues including War crime, war crimes, crim ...
in May 2012 identified at least 72 civilians killed in the campaign. Following a coup d'état attempt in October 2013, Libyan Prime Minister Ali Zeidan requested technical advice and trainers from NATO to assist with ongoing security issues.


Turkish border

Use of Article 5 has been threatened multiple times and four out of seven official Article 4 consultations have been called due to
spillover Spillover may refer to: * Adsorption spillover, a chemical phenomenon involving the movement of atoms adsorbed onto a metal surface * Catalyst support#Spillover * Behavioral spillover, the effect that one behavior has on other behaviors with a s ...
in Turkey from the Syrian civil war. In April 2012, Turkish Prime Minister
Recep Tayyip Erdoğan Recep Tayyip Erdoğan (born 26 February 1954) is a Turkish politician who is the 12th and current president of Turkey since 2014. He previously served as the 25th prime minister of Turkey, prime minister from 2003 to 2014 as part of the Jus ...
considered invoking Article 5 of the NATO treaty to protect Turkish national security in a dispute over the Syrian civil war. The alliance responded quickly, and a spokesperson said the alliance was "monitoring the situation very closely and will continue to do so" and "takes it very seriously protecting its members." After the shooting down of a Turkish military jet by Syria in June 2012 and Syrian forces shelling Turkish cities in October 2012 resulting in two Article 4 consultations, NATO approved
Operation Active Fence Operation Active Fence is an ongoing NATO operation to protect the Turkey, Turkish southern border region with Syria as part of the ongoing Syrian Civil War. Background and initial operation The Arab Spring was a wave of uprisings and pro ...
. In the past decade the conflict has only escalated. In response to the
2015 Suruç bombing Fifteen or 15 may refer to: *15 (number) *one of the years 15 BC, AD 15, 1915, 2015 Music *Fifteen (band), a punk rock band Albums * ''15'' (Buckcherry album), 2005 * ''15'' (Ani Lorak album), 2007 * ''15'' (Phatfish album), 2008 * ...
, which Turkey attributed to
ISIS Isis was a major goddess in ancient Egyptian religion whose worship spread throughout the Greco-Roman world. Isis was first mentioned in the Old Kingdom () as one of the main characters of the Osiris myth, in which she resurrects her sla ...
, and other security issues along its southern border,telegraph.co.uk: "Turkey calls for emergency Nato meeting to discuss Isil and PKK"
, 26 July 2015
Turkey called for an emergency meeting. The latest consultation happened in February 2020, as part of increasing tensions due to the Northwestern Syria offensive, which involved Syrian and suspected Russian airstrikes on Turkish troops, and risked direct confrontation between Russia and a NATO member.


Membership

The 32 NATO members are: * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * NATO has thirty-two members, mostly in Europe with two in North America. NATO's "area of responsibility", within which attacks on member states are eligible for an Article 5 response, is defined under Article 6 of the
North Atlantic Treaty The North Atlantic Treaty, also known as the Washington Treaty, forms the legal basis of, and is implemented by, the North Atlantic Treaty Organization (NATO). The treaty was signed in Washington, D.C., on 4 April 1949. Background The treat ...
to include member territory in Europe, North America, Turkey, and islands in the North Atlantic north of the
Tropic of Cancer The Tropic of Cancer, also known as the Northern Tropic, is the Earth's northernmost circle of latitude where the Sun can be seen directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted toward the Sun ...
. Attacks on vessels, aircraft and other forces in the North Atlantic (again, north of the Tropic of Cancer) and the Mediterranean Sea may also provoke an Article 5 response. During the original treaty negotiations, the United States insisted that colonies such as the
Belgian Congo The Belgian Congo (, ; ) was a Belgian colonial empire, Belgian colony in Central Africa from 1908 until independence in 1960 and became the Republic of the Congo (Léopoldville). The former colony adopted its present name, the Democratic Repu ...
be excluded from the treaty.
French Algeria French Algeria ( until 1839, then afterwards; unofficially ; ), also known as Colonial Algeria, was the period of History of Algeria, Algerian history when the country was a colony and later an integral part of France. French rule lasted until ...
was, however, covered until its independence on 3 July 1962. Twelve of these thirty-two are original members who joined in 1949, while the other twenty joined in one of ten enlargement rounds.


Special arrangements

The three Nordic countries which joined NATO as founding members, Denmark, Iceland, and Norway, chose to limit their participation in three areas: there would be no permanent peacetime bases, no nuclear warheads and no Allied military activity (unless invited) permitted on their territory. However, Denmark allows the U.S. Space Force to maintain
Pituffik Space Base Pituffik Space Base ( ; ; ), formerly Thule Air Base (), is a United States Space Force base located on the northwest coast of Greenland in the Kingdom of Denmark under a defense agreement between Denmark and the United States. 150 United Stat ...
, in Greenland. From the mid-1960s to the mid-1990s, France pursued a military strategy of independence from NATO under a policy dubbed "Gaullo-Mitterrandism".
Nicolas Sarkozy Nicolas Paul Stéphane Sarközy de Nagy-Bocsa ( ; ; born 28 January 1955) is a French politician who served as President of France from 2007 to 2012. In 2021, he was found guilty of having tried to bribe a judge in 2014 to obtain information ...
negotiated the return of France to the integrated military command and the Defence Planning Committee in 2009, the latter being disbanded the following year. France remains the only NATO member outside the Nuclear Planning Group and, unlike the United States and the United Kingdom, will not commit its nuclear-armed submarines to the alliance.


Enlargement

NATO was established on 4 April 1949 by the signing of the
North Atlantic Treaty The North Atlantic Treaty, also known as the Washington Treaty, forms the legal basis of, and is implemented by, the North Atlantic Treaty Organization (NATO). The treaty was signed in Washington, D.C., on 4 April 1949. Background The treat ...
(Washington Treaty). The 12 founding members of the alliance were Belgium, Canada, Denmark, France, Iceland, Italy, Luxembourg, the Netherlands, Norway, Portugal, the United Kingdom, and the United States. Four new members joined during the Cold War: Greece (1952), Turkey (1952),
West Germany West Germany was the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until German reunification, its reunification with East Germany on 3 October 1990. It is sometimes known as the Bonn Republi ...
(1955) and Spain (1982). Following the
dissolution of the Soviet Union The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
, many former
Warsaw Pact The Warsaw Pact (WP), formally the Treaty of Friendship, Co-operation and Mutual Assistance (TFCMA), was a Collective security#Collective defense, collective defense treaty signed in Warsaw, Polish People's Republic, Poland, between the Sovi ...
and
post-Soviet states The post-Soviet states, also referred to as the former Soviet Union or the former Soviet republics, are the independent sovereign states that emerged/re-emerged from the dissolution of the Soviet Union in 1991. Prior to their independence, they ...
sought membership. In 1990, the territory of the former
East Germany East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from Foundation of East Germany, its formation on 7 October 1949 until German reunification, its reunification with West Germany (FRG) on ...
was added with the
reunification of Germany German reunification () was the process of re-establishing Germany as a single sovereign state, which began on 9 November 1989 and culminated on 3 October 1990 with the dissolution of the German Democratic Republic and the integration of i ...
. At the
1999 Washington summit 1999 was designated as the International Year of Older Persons. Events January * January 1 – The euro currency is established and the European Central Bank assumes its full powers. * January 3 – The Mars Polar Lander is lau ...
, Hungary, Poland, and the Czech Republic officially joined, and NATO issued new guidelines for membership, with individualized "
Membership Action Plan NATO is a military alliance of thirty-two European and North American countries that constitutes a system of collective defense. The process of joining the alliance is governed by Article 10 of the North Atlantic Treaty, which allows for the ...
s". These plans governed the addition of new members: Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia, and Slovenia in 2004, Albania and Croatia in 2009, Montenegro in 2017, and North Macedonia in 2020. Finland and Sweden are the newest members, joining on 4 April 2023 and 7 March 2024 respectively, spurred on by
Russia's 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 ...
. Ukraine's relationship with NATO began with the NATO–Ukraine Action Plan in 2002. In 2010, under President
Viktor Yanukovych Viktor Fedorovych Yanukovych (born 9 July 1950) is a Ukrainian politician who served as the fourth president of Ukraine from 2010 to 2014. He also served as the prime minister of Ukraine several times between 2002 and 2007 and was a member of t ...
, Ukraine re-affirmed its non-aligned status and renounced aspirations of joining NATO. During the
2014 Ukrainian Revolution The Revolution of Dignity (), also known as the Maidan Revolution or the Ukrainian Revolution, took place in Ukraine in February 2014 at the end of the Euromaidan protests, when deadly clashes between protesters and state forces in the capit ...
, Russia occupied Crimea and supported armed separatists in eastern Ukraine. As a result, in December 2014 Ukraine's parliament voted to end its non-aligned status, and in 2019 it enshrined the goal of NATO membership in the
Constitution A constitution is the aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organization or other type of entity, and commonly determines how that entity is to be governed. When these pri ...
. At the June
2021 Brussels Summit The 2021 Brussels summit of the North Atlantic Treaty Organization (NATO) was the 30th NATO summit, formal meeting of the heads of state and heads of government of the North Atlantic Treaty Organization, held in Brussels, Belgium, on 14 June 2021 ...
, NATO leaders affirmed that Ukraine would eventually join the Alliance, and supported Ukraine's right to self-determination without interference. In late 2021, there was another massive Russian military buildup near Ukraine's borders. On 30 November, Russian president Putin said Ukraine joining NATO, and the deployment of missile defense systems or long-range missiles in Ukraine, would be crossing a red line. However, there were no such plans to deploy missiles in Ukraine. The Russian Foreign Ministry drafted a treaty that would forbid Ukraine or any former Soviet state from ever joining NATO. Secretary-General Stoltenberg replied that the decision is up to Ukraine and NATO members, adding "Russia has no veto, Russia has no say, and Russia has no right to establish a
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 ...
to try to control their neighbors". NATO offered to improve communications with Russia and discuss missile placements and military exercises, as long as Russia withdrew troops from Ukraine's borders. Instead, Russia invaded Ukraine in February 2022. Ukraine applied for NATO membership in September 2022 after Russia proclaimed it had annexed the country's southeast. Georgia was promised "future membership" during the 2008 summit in Bucharest, but US president
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
said in 2014 that the country was not "currently on a path" to membership. Russia continued to politically oppose further expansion, seeing it as inconsistent with informal understandings between Soviet leader
Mikhail Gorbachev Mikhail Sergeyevich Gorbachev (2 March 1931 – 30 August 2022) was a Soviet and Russian politician who served as the last leader of the Soviet Union from 1985 to dissolution of the Soviet Union, the country's dissolution in 1991. He served a ...
and European and US negotiators that allowed for a peaceful German reunification. A June 2016
Levada Center The Levada Center is a Russian independent, nongovernmental polling and sociological research organization. It is named after its founder, the first Russian professor of sociology Yuri Levada (1930–2006). The center traces back its history t ...
poll found that 68 percent of Russians think that deploying NATO troops in the
Baltic states The Baltic states or the Baltic countries is a geopolitical term encompassing Estonia, Latvia, and Lithuania. All three countries are members of NATO, the European Union, the Eurozone, and the OECD. The three sovereign states on the eastern co ...
and Poland – former Eastern bloc countries bordering Russia – is a threat to Russia. In contrast, 65 percent of Poles surveyed in a 2017 Pew Research Center report identified Russia as a "major threat", with an average of 31 percent saying so across all NATO countries, and 67 percent of Poles surveyed in 2018 favour US forces being based in Poland. Of non- CIS Eastern European countries surveyed by Gallup in 2016, all but
Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...
and
Montenegro , image_flag = Flag of Montenegro.svg , image_coat = Coat of arms of Montenegro.svg , coa_size = 80 , national_motto = , national_anthem = () , image_map = Europe-Mont ...
were more likely than not to view NATO as a protective alliance rather than a threat. A 2006 study in the journal ''
Security Studies __NOTOC__ Security studies, also known as international security studies, is an academic sub-field within the wider discipline of international relations that studies organized violence, military conflict, national security, and international s ...
'' argued that NATO enlargement contributed to
democratic consolidation Democratic consolidation is the process by which a new democracy matures, in a way that it becomes unlikely to revert to authoritarianism without an external shock, and is regarded as the only available system of government within a country. A coun ...
in Central and Eastern Europe.
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
also opposes further expansion.


NATO defence expenditure


Direct contributions

Member states pay for NATO's three common funds (the civil and military budgets and the security investment programme) based on a cost-sharing formula that includes per capita gross national income and other factors. In 2023–2024, the United States and Germany were the biggest contributors with 16.2% each.


Indirect contributions

Member states pay for and maintain their own troops and equipment. They contribute to NATO operations and missions by committing troops and equipment on a voluntary basis. Since 2006, the goal has been for each country to spend at least 2 percent of its gross domestic product on its own defence; in 2014, a NATO declaration said that countries not meeting the goal would "aim to move towards the 2 percent guideline within a decade". In July 2022, NATO estimated that 11 members would meet the target in 2023. On 14 February 2024, NATO Secretary General
Jens Stoltenberg Jens Stoltenberg (; born 16 March 1959) is a Norwegian politician from the Labour Party. Since 2025, he has been the Minister of Finance in the Støre Cabinet. He has previously been the prime minister of Norway and secretary general of NATO. ...
said that 18 member states would meet the 2% target in 2024. On 17 June 2024, prior to the 2024 Washington summit, Stoltenberg updated that figure and announced that a record 23 of 32 NATO member states were meeting their defense spending targets of 2% of their country's GDP. NATO added that defense spending for European member states and Canada was up 18% in the past year alone.


Partnerships with third countries

The
Partnership for Peace The Partnership for Peace (PfP; ) is a North Atlantic Treaty Organization (NATO) program aimed at creating trust and cooperation between the member states of NATO and other states mostly in Europe, including post-Soviet states; 18 states are ...
(PfP) programme was established in 1994 and is based on individual bilateral relations between each partner country and NATO: each country may choose the extent of its participation. Members include all current and former members of the
Commonwealth of Independent States The Commonwealth of Independent States (CIS) is a regional organization, regional intergovernmental organization in Eurasia. It was formed following the dissolution of the Soviet Union, dissolution of the Soviet Union in 1991. It covers an ar ...
. The
Euro-Atlantic Partnership Council The Euro-Atlantic Partnership Council (EAPC) is a post–Cold War, North Atlantic Treaty Organization (NATO) institution. The EAPC is a multilateral forum created to improve relations between NATO and non-NATO countries in Europe and Central Asi ...
(EAPC) was first established on 29 May 1997, and is a forum for regular coordination, consultation and dialogue between all fifty participants. The PfP programme is considered the operational wing of the Euro-Atlantic Partnership. Other third countries have also been contacted for participation in some activities of the PfP framework, such as Afghanistan. The European Union (EU) signed a comprehensive package of arrangements with NATO under the
Berlin Plus agreement The Berlin Plus agreement is the short title of a comprehensive package of agreements made between NATO and the European Union, EU on 16 December 2002.NATO, ''Berlin Plus agreement'', June 21, 2006. These agreements were based on conclusions of ...
on 16 December 2002. With this agreement, the EU was given the possibility of using NATO assets if it wanted to act independently in an international crisis, on the condition that NATO itself did not want to act – the so-called "
right of first refusal Right of first refusal (ROFR or RFR) is a contractual right that gives its holder the option to enter a business transaction with the owner of something, according to specified terms, before the owner is entitled to enter into that transactio ...
". For example, Article 42(7) of the 1982
Treaty of Lisbon The Treaty of Lisbon (initially known as the Reform Treaty) is a European agreement that amends the two treaties which form the constitutional basis of the European Union (EU). The Treaty of Lisbon, which was signed by all EU member states o ...
specifies that "If a Member State is the victim of armed aggression on its territory, the other Member States shall have towards it an obligation of aid and assistance by all the means in their power". The treaty applies globally to specified territories, whereas NATO is restricted under its Article 6 to operations north of the
Tropic of Cancer The Tropic of Cancer, also known as the Northern Tropic, is the Earth's northernmost circle of latitude where the Sun can be seen directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted toward the Sun ...
. It provides a "double framework" for the EU countries that are also linked with the PfP programme. Additionally, NATO cooperates and discusses its activities with numerous other non-NATO members. The
Mediterranean Dialogue The Mediterranean Dialogue, first launched in 1994, is a forum of cooperation between NATO and seven countries of the Mediterranean. Its stated aim is "to create good relations and better mutual understanding and confidence throughout the region, p ...
was established in 1994 to coordinate in a similar way with
Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...
and countries in North Africa. The
Istanbul Cooperation Initiative The Istanbul Cooperation Initiative (ICI) is a NATO initiative that was launched during the organisation's 2004 Istanbul summit. During the summit, NATO leaders decided to elevate NATO's Mediterranean Dialogue to a genuine partnership and to ...
was announced in 2004 as a dialogue forum for the Middle East along the same lines as the Mediterranean Dialogue. The four participants are also linked through the
Gulf Cooperation Council The Cooperation Council for the Arab States of the Gulf (), also known as the Gulf Cooperation Council (GCC; ), is a Regional integration, regional, intergovernmental organization, intergovernmental, political, and economic union comprising Ba ...
. In June 2018, Qatar expressed a wish to join NATO, who ruled it out, saying that only additional European countries could join according to Article 10 of NATO's founding treaty. Qatar and NATO had earlier signed a joint security agreement, in January 2018. Political dialogue with Japan began in 1990, and since then, the Alliance has gradually increased its contact with countries that do not form part of any of these cooperation initiatives. In 1998, NATO established a set of general guidelines that do not allow for a formal institutionalization of relations, but reflect the Allies' desire to increase cooperation. Following extensive debate, the term "Contact Countries" was agreed by the Allies in 2000. By 2012, the Alliance had broadened this group, which meets to discuss issues such as counter-piracy and technology exchange, under the names " global partners" or "partners across the globe". Australia and New Zealand, both contact countries, are also members of the
AUSCANNZUKUS AUSCANNZUKUS is an abbreviation for the naval Command, Control, Communications and Computers (C4) interoperability organization involving the Anglosphere nations of Australia, Canada, New Zealand, the United Kingdom, and the United States. It is a ...
strategic alliance, and similar regional or bilateral agreements between contact countries and NATO members also aid cooperation. NATO Secretary General
Jens Stoltenberg Jens Stoltenberg (; born 16 March 1959) is a Norwegian politician from the Labour Party. Since 2025, he has been the Minister of Finance in the Støre Cabinet. He has previously been the prime minister of Norway and secretary general of NATO. ...
stated that NATO needs to "address the
rise of China The Chinese Century () is a neologism suggesting that the 21st century may be geoeconomically or geopolitically dominated by the People's Republic of China, similar to how the "American Century" refers to the 20th century and the " British Cen ...
", by closely cooperating with Australia, New Zealand, Japan and South Korea. Colombia is NATO's latest partner and has access to the full range of cooperative activities offered; it is the first and only
Latin American Latin Americans (; ) are the citizenship, citizens of Latin American countries (or people with cultural, ancestral or national origins in Latin America). Latin American countries and their Latin American diaspora, diasporas are Metroethnicity, ...
country to cooperate with NATO.


Structure

All agencies and organizations of NATO are integrated into either the civilian administrative or military executive roles. For the most part, they perform roles and functions that directly or indirectly support the security role of the alliance as a whole. The civilian structure includes: * The
North Atlantic Council The North Atlantic Council (NAC) is the principal political decision-making body of the North Atlantic Treaty Organization (NATO), consisting of permanent representatives of its member countries. It was established by wikisource:North Atlantic ...
(NAC) is the body which has effective governance authority and powers of decision in NATO, consisting of member states' permanent representatives or representatives at higher level (ministers of foreign affairs or defence, or heads of state or government). The NAC convenes at least once a week and takes major decisions regarding NATO's policies. The meetings of the North Atlantic Council are chaired by the
secretary general Secretary is a title often used in organizations to indicate a person having a certain amount of authority, Power (social and political), power, or importance in the organization. Secretaries announce important events and communicate to the org ...
and, when decisions have to be made, action is agreed upon by consensus. There is no voting or decision by majority. Each state represented at the Council table or on any of its subordinate committees retains complete sovereignty and responsibility for its own decisions. * The
NATO Parliamentary Assembly The NATO Parliamentary Assembly serves as the consultative interparliamentary organisation for the North Atlantic Treaty Organization (NATO). It consists of delegates from the parliaments of the 32 NATO member countries as well as from associate ...
(NATO PA) is a body that sets broad strategic goals for NATO, which meets at two session per year. NATO PA interacts directly with the parliamentary structures of the national governments of the member states which appoint Permanent Members, or ambassadors to NATO. The NATO Parliamentary Assembly is made up of legislators from the member countries of the North Atlantic Alliance as well as thirteen associate members. It is however officially a structure different from NATO, and has as aim to join deputies of NATO countries in order to discuss security policies on the NATO Council. *
NATO headquarters The NATO headquarters is the political and administrative center of the North Atlantic Treaty Organization (NATO). After previous locations in London and Paris, it has been headquartered in Brussels since 1967, in a complex in Haren, part of ...
, located on Boulevard Léopold III/Leopold III-laan, B-1110 Brussels, which is in the
City of Brussels The City of Brussels is the largest List of municipalities of the Brussels-Capital Region, municipality and historical City centre, centre of the Brussels, Brussels-Capital Region, as well as the capital of the French Community of Belgium, the ...
municipality. The staff at the Headquarters is composed of national delegations of member countries and includes civilian and military liaison offices and officers or diplomatic missions and diplomats of partner countries, as well as the International Staff and International Military Staff filled from serving members of the armed forces of member states. Non-governmental groups have also grown up in support of NATO, broadly under the banner of the
Atlantic Council The Atlantic Council is an American think tank in the field of international affairs, favoring Atlanticism, founded in 1961. It manages sixteen regional centers and functional programs related to international security and global economic prosp ...
/
Atlantic Treaty Association The Atlantic Treaty Association (ATA) is an umbrella organization which draws together political leaders, academics, military officials, and diplomats to support the North Atlantic Treaty Organization (NATO). The ATA is an independent organization ...
movement. The military structure includes: * The Military Committee (MC) is the body of NATO that is composed of
member states A member state is a state that is a member of an international organization or of a federation or confederation. Since the World Trade Organization (WTO) and the International Monetary Fund (IMF) include some members that are not sovereign states ...
' Chiefs of Defence (CHOD) and advises the
North Atlantic Council The North Atlantic Council (NAC) is the principal political decision-making body of the North Atlantic Treaty Organization (NATO), consisting of permanent representatives of its member countries. It was established by wikisource:North Atlantic ...
(NAC) on military policy and strategy. The national CHODs are regularly represented in the MC by their permanent Military Representatives (MilRep), who often are two- or three-star flag officers. Like the council, from time to time the Military Committee also meets at a higher level, namely at the level of Chiefs of Defence, the most senior military officer in each country's armed forces. The MC is led by its chairman, who directs NATO's military operations. Until 2008 the Military Committee excluded France, due to that country's 1966 decision to remove itself from the
NATO Military Command Structure The structure of the North Atlantic Treaty Organization (NATO) is complex and multi-faceted. The decision-making body is the North Atlantic Council (NAC), and the member state representatives also sit on the Defence Planning Committee (NATO), Defe ...
, which it rejoined in 1995. Until France rejoined NATO, it was not represented on the Defence Planning Committee, and this led to conflicts between it and NATO members. Such was the case in the lead up to
Operation Iraqi Freedom The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with the invasion by a United States-led coalition, which resulted in the overthrow of the Ba'athist governm ...
. *
Allied Command Operations The Allied Command Operations (ACO) is one of the two strategic commands of the NATO, North Atlantic Treaty Organization (NATO), the other being Allied Command Transformation (ACT). The headquarters and commander of ACO is Supreme Headquarters A ...
(ACO) is the NATO command responsible for NATO operations worldwide. * The Rapid Deployable Corps include
Eurocorps Eurocorps (, ), located in the French city of Strasbourg (Bas-Rhin), is a multinational corps headquarters. Founded by France and Germany in 1992, it is today composed of personnel from six framework nations and five associated nations. The fram ...
, I. German/Dutch Corps,
Multinational Corps Northeast The Multinational Corps Northeast was formed on 18 September 1999 at Szczecin, Poland, which became its headquarters. It evolved from what was for many years the only multinational corps in NATO, Allied Land Forces Schleswig-Holstein and Jutland ...
, and
NATO Rapid Deployable Italian Corps 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 aftermath ...
among others, as well as naval High Readiness Forces (HRFs), which all report to Allied Command Operations. *
Allied Command Transformation Allied Command Transformation (ACT; French language, French: ''Commandement allié Transformation'') is a military command (military formation), command of the NATO, North Atlantic Treaty Organization (NATO), formed in 2003 after restructuring. ...
(ACT), responsible for transformation and training of NATO forces.


Legal authority of NATO commanders

NATO is an alliance of 32 sovereign states and their individual sovereignty is unaffected by participation in the alliance. NATO has no parliaments, no laws, no enforcement, and no power to punish individual citizens. As a consequence of this lack of sovereignty the power and authority of a NATO commander are limited. NATO commanders cannot punish offences such as failure to obey a lawful order; dereliction of duty; or disrespect to a senior officer. NATO commanders expect obedience but sometimes need to subordinate their desires or plans to the operators who are themselves subject to sovereign codes of conduct like the
UCMJ The Uniform Code of Military Justice (UCMJ) is the foundation of the system of military justice of the armed forces of the United States. The UCMJ was established by the United States Congress in accordance with their constitutional authority, ...
. A case in point was the clash between General Sir Mike Jackson and General
Wesley Clark Wesley Kanne Clark (born Wesley J. Kanne, 23 December 1944) is a retired United States Army officer. He graduated as valedictorian of the class of 1966 at United States Military Academy, West Point and was awarded a Rhodes Scholarship to the U ...
over KFOR actions at Pristina Airport. NATO commanders can issue orders to their subordinate commanders in the form of operational plans (OPLANs), operational orders (OPORDERs), tactical direction, or fragmental orders (FRAGOs) and others. The joint rules of engagement must be followed, and the
Law of Armed Conflict The law of war is a component of international law that regulates the conditions for initiating war (''jus ad bellum'') and the conduct of hostilities (''jus in bello''). Laws of war define sovereignty and nationhood, states and territories, ...
must be obeyed at all times. Operational resources "remain under national command but have been transferred temporarily to NATO. Although these national units, through the formal process of transfer of authority, have been placed under the operational command and control of a NATO commander, they never lose their national character." Senior national representatives, like
CDS CDS, CDs, Cds, etc. may refer to: Finance * Canadian Depository for Securities, Canadian post-trade financial services company * Certificate of deposit (CDs) * Counterfeit Deterrence System, developed by the Central Bank Counterfeit Deterrence ...
, "are designated as so-called red-cardholders". Caveats are restrictions listed "nation by nation... that NATO Commanders... must take into account".


See also

*
Atlanticism Atlanticism, also known as Transatlanticism or North Atlanticism, is the ideology which advocates a close alliance between nations in Northern America (the United States and Canada) and in Europe on political, economic, and defense issues. The te ...
*
Common Security and Defence Policy The Common Security and Defence Policy (CSDP) is the European Union's (EU) course of action in the fields of defence and crisis management, and a main component of the EU's Common Foreign and Security Policy (CFSP). The CSDP involves the de ...
of the
European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...
**
History of the Common Security and Defence Policy This article outlines the history of the Common Security and Defence Policy (CSDP) of the European Union (EU), a part of the Common Foreign and Security Policy (CFSP). The post-war period saw several short-lived or ill-fated initiatives for E ...
*
List of military alliances A military alliance is a legally binding treaty between two or more parties in which the contracting parties agree to mutually protect one another militarily in case of an armed conflict. Military alliances differ from Coalition#Military, coaliti ...
*
List of military equipment of NATO This list details the military equipment used by NATO. The page is sorted by countries listed alphabetically. After the country-specific lists is an overview of NATO military equipment, as well as general information about NATO forces: armies, ai ...
*
List of countries in Europe by military expenditures This article lists military spending in European countries by varying methods including as a percentage of GDP per capita and as a total capital expenditure as listed by the Stockholm International Peace Research Institute unless otherwise stated o ...
*
Major non-NATO ally A major non-NATO ally (MNNA) is a designation given by the Federal government of the United States, United States government to countries that have strategic working relationships with the United States Armed Forces while not being members of t ...
*
Ranks and insignia of NATO A Standardization agreement, NATO standard grade scale is used by the NATO and its partners for the purpose of comparing military ranks across the Member states of NATO, member nations militaries, as well as for a number of administrative tasks. ...


Similar organizations

*
AUKUS AUKUS ( ), also styled as Aukus, is a trilateral security partnership between Australia, the United Kingdom, and the United States intended to "promote a free and open Indo-Pacific that is secure and stable." Initially announced on 15 September ...
(Australia, United Kingdom, United States) *
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 ...
(Australia, New Zealand, United States Security Treaty) *
Balkan Pact The Balkan Pact, or Balkan Entente, was a treaty signed by Greece, Romania, Turkey and Yugoslavia on 9 February 1934
(
SFR Yugoslavia The Socialist Federal Republic of Yugoslavia (commonly abbreviated as SFRY or SFR Yugoslavia), known from 1945 to 1963 as the Federal People's Republic of Yugoslavia, commonly referred to as Socialist Yugoslavia or simply Yugoslavia, was a country ...
with NATO members
Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...
and
Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
) *
Collective Security Treaty Organization The Collective Security Treaty Organization (CSTO, ) is an Intergovernmental organization, intergovernmental military alliance in Eurasia consisting of six post-Soviet states: Armenia, Belarus, Kazakhstan, Kyrgyzstan, Russia, and Tajikistan. Th ...
(CSTO) — Russia and some former Soviet republics *
Five Eyes The Five Eyes (FVEY) is an Anglosphere intelligence alliance comprising Australia, Canada, New Zealand, the United Kingdom, and the United States. These countries are party to the multilateral UKUSA Agreement, a treaty for joint cooperat ...
(Australia, Canada, New Zealand, United Kingdom, United States intelligence services) *
Five Power Defence Arrangements The Five Power Defence Arrangements (FPDA) are a series of bilateral defence relationships established by a series of multi-lateral agreements between Australia, Malaysia, New Zealand, Singapore, and the United Kingdom, all of which are Commonwe ...
(FPDA) * Free World Military Assistance Forces (FWMAF) *
Inter-American Treaty of Reciprocal Assistance 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 ...
*
Islamic Military Counter Terrorism Coalition The Islamic Military Counter Terrorism Coalition (IMCTC) is an intergovernmental counter-terrorist military alliance between 43 member states in the Muslim world, united around the war against the Islamic State and other counter-terrorist activi ...
(IMCTC) * Middle East Treaty Organization (METO) *
Northeast Asia Treaty Organization The Northeast Asia Treaty Organization (NEATO) was a proposed international organization for Collective security, collective defense in Northeast Asia. It would have comprised the United States, Japan, South Korea, and Taiwan. Background United ...
(NEATO) *
Shanghai Cooperation Organisation The Shanghai Cooperation Organisation (SCO) is a Eurasian politics, political, economy, economic, international security and Defence (military), defence organization of ten member states. It was established in 2001 by the China, People's Republic ...
(SCO) *
South Atlantic Peace and Cooperation Zone The South Atlantic Peace and Cooperation Zone (abbreviations: ZPCAS or ZOPACAS; ; ; also called the ''Zone of Peace and Cooperation of the South Atlantic'') was created in 1986 through resolution A/RES/41/11 of the U.N. general assembly on Br ...
*
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) *
United Nations Command United Nations Command (UNC or UN Command) is the multinational military force established to support the South Korea, Republic of Korea (South Korea) during and after the Korean War. It was the first attempt at collective security by the U ...
(UNC)


References


Works cited

* * * * * *


Further reading

* * Axelrod, Robert, and Silvia Borzutzky. "NATO and the War on Terror: The Organizational Challenges of the Post 9/11 World." ''Review of International Organizations'' 1.3 (2006): 293–307
online
* Borawski, John, and Thomas-Durell Young. ''NATO after 2000: the future of the Euro-Atlantic Alliance'' (Greenwood, 2001). * * Hendrickson, Ryan C. "NATO's next secretary general: Rasmussen's leadership legacy for Jens Stoltenberg." ''Journal of Transatlantic Studies'' (2016) 15#3 pp 237–251. * * "NATO at 70: Balancing Collective Defense and Collective Security", Special issue of ''Journal of Transatlantic Studies'' 17#2 (June 2019) pp: 135–267. * NATO Office of Information and Press, NATO Handbook : Fiftieth Anniversary Edition, NATO, Brussels, 1998–99, Second Reprint, * * Sayle, Timothy Andrews. ''Enduring Alliance: A History of NATO and the Postwar Global Order'' (Cornell University Press, 2019
online review
* Stevenson, Tom, "Ill-Suited to Reality" (review of Sten Rynning, ''NATO: From Cold War to Ukraine, A History of the World's Most Powerful Alliance'', Yale, March 2024, , 345 pp.; Peter Apps, ''Deterring Armageddon: A Biography of NATO'', Wildfire, February 2024, , 624 pp.; Grey Anderson, ed., ''Natopolitanism: The Atlantic Alliance since the Cold War'', Verso, July 2023, , 356 pp.), ''
London Review of Books The ''London Review of Books'' (''LRB'') is a British literary magazine published bimonthly that features articles and essays on fiction and non-fiction subjects, which are usually structured as book reviews. History The ''London Review of Book ...
'', vol. 46, no. 15 (1 August 2024), pp. 15–16, 18. "The most egregious cases of international aggression since the founding of the ATOalliance have all involved the US: Korea, Vietnam, the First Gulf War, Afghanistan, Iraq. Yet thanks to the alliance, US-led wars have usually been defended in Europe by appealing to their righteousness.... Triumphalism about Nato has also tended to conceal the extent of US covert activity inside Europe throughout 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 ...
, including... in Italy... Denmark... and France... as well as in West Germany and the Netherlands.... The
CIA The Central Intelligence Agency (CIA; ) is a civilian foreign intelligence service of the federal government of the United States tasked with advancing national security through collecting and analyzing intelligence from around the world and ...
was heavily involved in securing the takeover of Greece by a
military junta A military junta () is a system of government led by a committee of military leaders. The term ''Junta (governing body), junta'' means "meeting" or "committee" and originated in the Junta (Peninsular War), national and local junta organized by t ...
in 1967.... It might be cosier to imagine a world without CIA torture sites in Poland, Lithuania and Romania, but that isn't the world we live in.... The conditions for the creation of ATOwere established by Britain's survival in 1940 and its role as a springboard for
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 ...
's 'Crusade in Europe'. iscussions about founding NATO began in1948, leading to... the '
Pentagon In geometry, a pentagon () is any five-sided polygon or 5-gon. The sum of the internal angles in a simple polygon, simple pentagon is 540°. A pentagon may be simple or list of self-intersecting polygons, self-intersecting. A self-intersecting ...
proposals'. Nato's founding treaty was igned inApril 1949... oday, tirty-five years after the end of the Cold War, almost a hundred thousand US military... are stationed across Europe... Another 12,500 are with the Sixth Fleet in the Mediterranean....
Tactical nuclear weapon A tactical nuclear weapon (TNW) or non-strategic nuclear weapon (NSNW) is a nuclear weapon that is designed to be used on a battlefield in military situations, mostly with friendly forces in proximity and perhaps even on contested friendly territ ...
s are deployed... in Germany, Italy, Belgium and the Netherlands... Only US officials can... order... their use." . 15."It isn't a law of nature that Dutch pilots should fly S-made F-35s and carry US nuclear bombs on orders from Washington." (p. 18.)


External links

*
Secretary General's Annual Reports 2011–present
* * * * {{DEFAULTSORT:Nato NATO 1949 establishments in Washington, D.C. 1949 in military history 20th-century military alliances 21st-century military alliances Anti-communist organizations Cold War alliances and military strategy Cold War organizations Cold War treaties Foreign relations of the Soviet Union International military organizations Military alliances involving Albania Military alliances involving Belgium Military alliances involving Bulgaria Military alliances involving Canada Military alliances involving Croatia Military alliances involving the Czech Republic Military alliances involving Denmark Military alliances involving Estonia Military alliances involving Finland Military alliances involving France Military alliances involving Germany Military alliances involving Greece Military alliances involving Hungary Military alliances involving Italy Military alliances involving Latvia Military alliances involving Lithuania Military alliances involving Luxembourg Military alliances involving the Netherlands Military alliances involving Norway Military alliances involving Poland Military alliances involving Portugal Military alliances involving Romania Military alliances involving Spain Military alliances involving Sweden Military alliances involving the United Kingdom Military alliances involving the United States Military alliances involving Turkey Military units and formations established in 1949 Organisations based in Brussels Supraorganizations