List of military alliances

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This is the list of military alliances. A military alliance is a formal agreement between two or more parties concerning national security in which the contracting parties agree to mutual protection and support in case of a crisis that has not been identified in advance. Military alliances differ from coalitions, which formed for a crisis that already exists. Numerous forms of military and defensive alliances have existed between states since early human history. This is a comprehensive list of the most important alliances.

Military alliances shortly before World War I. Germany and the Ottoman Empire allied after the outbreak of war.

Before AD 1200

Legend
Active military alliances
Years Name Members
c. 7th century–338 BC Latin League About 30 villages and tribes in the region of Latium
c. 6th century–338 BC Peloponnesian League Various city-states in the Peloponnese, dominated by Sparta
493 BC Foedus Cassianum Roman Republic
Latin League
478–404 BC Delian League See Members of the Delian League
215 BC Macedonian–Carthaginian Treaty Macedonia
Carthage
433–554 Silla-Baekje Alliance   Silla
  Baekje
1123 Pactum Warmundi   Kingdom of Jerusalem
  Republic of Venice
1167–1250 Lombard League Numerous cities in medieval Lombardy, modern Northern Italy

1200–1699

Years Name Members
1266–1320 Byzantine-Mongol Alliance   Byzantine Empire
  Golden Horde
1295–1560 Auld Alliance   Kingdom of Scotland
  Kingdom of France
1367–1385 Confederation of Cologne Cities of the Hanseatic League
1373 Anglo-Portuguese Treaty of 1373   Kingdom of Portugal
  Kingdom of England
1386 Treaty of Windsor[note 1]   Kingdom of Portugal
  Kingdom of England
1489 Treaty of Dordrecht   Holy Roman Empire
  Kingdom of England
1499 Treaty of Blois   Kingdom of France
  Republic of Venice
1508–1510 League of Cambrai   Papal States
  Kingdom of France
  Aragon
  Holy Roman Empire
1511–1513 Catholic League (Italian)   Papal States
  Republic of Venice
  Kingdom of England
  Aragon
  Holy Roman Empire
1524–1525 Franco-Polish alliance   Kingdom of France
  Crown of Poland
1528 Franco-Hungarian alliance   Kingdom of France
  Kingdom of Hungary
1531–1547 Schmalkaldic League Various Protestant German States of the Holy Roman Empire
1536–1798 Franco-Ottoman alliance   Kingdom of France
  Ottoman Empire
1571–1573 Holy League   Papal States
  Spain
  Republic of Venice among others
1596–1604 Triple Alliance (1596)   Dutch Republic
  Kingdom of France
  Kingdom of England
1608–1621 Protestant Union Various Protestant German States of the Holy Roman Empire
1609–1635 Catholic League (German) Various Catholic German States of the Holy Roman Empire
1631–1639 Treaty of Fontainebleau   Kingdom of France
  Electorate of Bavaria
1654 Anglo-Swedish Alliance   Sweden
  England
1656 Treaty of Marienburg   Sweden
  Brandenburg-Prussia
1668–1672 Triple Alliance   Kingdom of England
  Sweden
  Dutch Republic
1684–1699 Holy League   Holy Roman Empire
  Polish-Lithuanian Commonwealth
  Republic of Venice
  Tsardom of Russia
1689–1713 League of Augsburg   Kingdom of England
  Dutch Republic
  Holy Roman Empire
1699 Treaty of Preobrazhenskoye   Denmark-Norway
  Tsardom of Russia
  Electorate of Saxony
  Polish-Lithuanian Commonwealth

1700–1899

Years Name Members
1716–1731 Anglo-French Alliance   Kingdom of France
  Kingdom of Great Britain
1717–1718 Triple Alliance (1717)   Dutch Republic
  Kingdom of France
  Kingdom of Great Britain
1731–1756 Anglo-Austrian Alliance   Kingdom of Great Britain
  Holy Roman Empire
1747–1748 Convention of Saint Petersburg   Kingdom of Great Britain
  Russian Empire
  Dutch Republic
1756–1762 Anglo-Prussian Alliance (1756)   Kingdom of Great Britain
  Kingdom of Prussia
1756-1792 Franco-Austrian Alliance   Kingdom of France
  Holy Roman Empire
1764–1788 Russo-Prussian alliance   Russian Empire
  Kingdom of Prussia
1778–1800 Treaty of Alliance   United States
  Kingdom of France
1779–1783 Treaty of Aranjuez   Kingdom of France
  Kingdom of Spain
1781–1790 Austro-Russian Alliance   Russian Empire
  Holy Roman Empire
1786 Moroccan-American Treaty of Friendship[1]   United States
  Morocco
1788–1791 Anglo-Prussian Alliance (1788)   Kingdom of Great Britain
  Kingdom of Prussia
1788–1791 Triple Alliance (1788)   Kingdom of Great Britain
  Kingdom of Prussia
  Dutch Republic
1790–1792 Polish–Prussian alliance   Kingdom of Prussia
  Polish-Lithuanian Commonwealth
1807 Russo-Serbian Alliance   Russian Empire
  Revolutionary Serbia
1815–1818 The Quadruple Alliance   United Kingdom
  Austrian Empire
  Kingdom of Prussia
  Russian Empire
1815–1825 Holy Alliance   Russian Empire
  Kingdom of Prussia
  Austrian Empire
1865–1872 Triple Alliance of 1865   Brazil
  Uruguay
  Argentina
1866–1868 First Balkan Alliance   Kingdom of Greece (1867)
  Principality of Montenegro (1866)
  Principality of Serbia
1867–1868 Greek–Serbian Alliance of 1867   Kingdom of Greece
  Principality of Serbia
1873 Treaty of Defensive Alliance (Bolivia–Peru)   Bolivia
  Peru
1873–1887 League of the Three Emperors   Russian Empire
  Austria-Hungary
  German Empire
1879–1918 Dual Alliance   Austria-Hungary
  German Empire
1881–1908 Austro–Serbian Alliance   Austria-Hungary
  Principality of Serbia
1882–1914 Triple Alliance   German Empire
  Austria-Hungary
  Kingdom of Italy
1892 Treaty of Nice   French Third Republic
  Kingdom of Italy
1892–1917 Franco-Russian Alliance   French Third Republic
  Russian Empire

1900–1999

Years Name Members
1902–1923 Anglo-Japanese Alliance   Japan
  United Kingdom
1904 Entente Cordiale[note 2]   France
  United Kingdom
1904 Treaty of Sofia   Principality of Bulgaria
  Kingdom of Serbia
1907–1917 Triple Entente   France
  Russian Empire
  United Kingdom
1912–1913 Balkan League   Kingdom of Bulgaria
  Greece
  Kingdom of Montenegro
  Kingdom of Serbia
1913–1914 Greek–Serbian Alliance   Greece
  Serbia
1914–1918 Central Powers   Austria-Hungary
  Bulgaria
  German Empire
  Ottoman Empire
1914–1918 Ottoman–Bulgarian alliance   Bulgaria
  Ottoman Empire
1915–1918 Bulgaria–Germany treaty (1915)   Bulgaria
  German Empire
1915–1918 German–Ottoman alliance   German Empire
  Ottoman Empire
1916–1918 Treaty of Bucharest (1916)   France
  Italy
  Romania
  Russian Empire
  United Kingdom
1920–1921 Polish-Ukrainian Agreement   Poland
  Ukraine
1920–1938 Little Entente   Czechoslovakia
  Romania
  Yugoslavia
1920–1940 Franco-Polish Alliance (1921)   France
  Poland
1920–1921 Georgian–Polish alliance   Georgia
  Poland
1921–1939 Polish–Romanian alliance   Poland
  Romania
1922–1930 Anglo-Iraqi Treaty of 1922   Iraq
  United Kingdom
1924–1938 Treaty of Alliance and Friendship between France and Czechoslovakia   Czechoslovakia
  France
1930–1939/40 Finnish–Estonian defence cooperation   Estonia
  Finland
1930–1947 Anglo-Iraqi Treaty of 1930   Iraq
  United Kingdom
1934–1938 Balkan Pact   Greece
  Romania
  Turkey
  Yugoslavia
1934–1938 Rome Protocols   Austria
  Hungary
  Italy
1934–1935 Stresa Front   France
  Italy
  United Kingdom
1935–1938 Czechoslovak–Soviet Treaty of Mutual Assistance   Czechoslovakia
  Soviet Union
1935–1939 Franco-Soviet Treaty of Mutual Assistance   France
  Soviet Union
1936–1956 Anglo-Egyptian Treaty of 1936   Egypt
  United Kingdom
1939–1944 Anglo-Polish alliance   Poland
  United Kingdom
1939–1945 Iberian Pact   Portugal
  Spain
1939–1940 Soviet–Estonian Mutual Assistance Treaty   Estonia
  Soviet Union
1939–1940 Soviet–Latvian Mutual Assistance Treaty   Latvia
  Soviet Union
1939–1940 Soviet–Lithuanian Mutual Assistance Treaty   Lithuania
  Soviet Union
1939–1949[note 3] Pact of Steel   Germany
  Italy
1940 Ogdensburg Agreement   Canada
  United States
1940–1945 Tripartite Pact

  Bulgaria
  Croatia
  Germany
  Hungary
  Italy
  Japan
  Romania
  Slovakia
  Yugoslavia[note 4]

1941–1945 Anglo-Soviet Agreement   Soviet Union
  United Kingdom
1942–1945 Anglo-Soviet Treaty of 1942   Soviet Union
  United Kingdom
1942–1945 Declaration by United Nations
1942–1945 Croatian–Romanian–Slovak friendship proclamation   Croatia
  Romania
  Slovakia
1943 Five Eyes   Australia
  Canada
  New Zealand
  United Kingdom
  United States
1946–1948 Treaty of London (1946)[2]   Jordan
  United Kingdom
1947–1957 UK-Ceylon Defence Pact[3][4]   Ceylon
  United Kingdom
1947–1997 Treaty of Dunkirk   France
  United Kingdom
1947 Inter-American Treaty of Reciprocal Assistance (Rio Pact)
List
1948–1954   Western Union[note 5]   Belgium
  France
  Luxembourg
  Netherlands
  United Kingdom
1949   North Atlantic Treaty Organization (NATO)[note 6]
List
1949–1989 Secret Swedish-American Alliance[5]   United States
  Sweden
1950–1979 Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance   China
  Soviet Union
1951 Mutual Defense Treaty (United States–Philippines)   Philippines
  United States
1951 ANZUS Treaty   Australia
  New Zealand
  United States
1951 U.S.-Japan Alliance   Japan
  United States
1952 Brazil–United States Treaty   Brazil
  United States
1952 US–Israel Mutual Defense Assistance Agreement[6]   Israel
  United States
1953 Mutual Defense Treaty (United States–South Korea)   South Korea
  United States
1953–1956 Agreement of Friendship and Cooperation   Greece
  Turkey
  Yugoslavia
1954 Mutual Defense Assistance Agreement (United States-Pakistan)   Pakistan

  United States

1954–1977   Southeast Asia Treaty Organization (SEATO)
1954–2011   Western European Union
List
1955–1979   Middle East Treaty Organization (METO)   Iran
  Iraq (withdrew in 1959)
  Pakistan
  Turkey
  United Kingdom
1955–1991 Warsaw Pact
List
1955–1975 Simonstown Agreement   South Africa
  United Kingdom
1955–1980 Sino-American Mutual Defense Treaty   China
  United States
1957–1967 Anglo-Malayan Defence Agreement   Malaya
  United Kingdom
1958–1962 Anglo-Nigerian Defence Agreement[7]   Nigeria
  United Kingdom
1958 US-UK Mutual Defence Agreement   United Kingdom
  United States
1960 Treaty of Mutual Cooperation and Security between the United States and Japan   Japan
  United States
1961 Sino-North Korean Mutual Aid and Cooperation Friendship Treaty   China
  North Korea
1962 Thanat–Rusk Communiqué   Thailand
  United States
1964–1979 Anglo-Maltese Defence Agreement[8]   Malta
  United Kingdom
1967–1972 Egypt–Jordan Mutual Defense Agreement[9]   Egypt
  Jordan
1968–1974 Mauritius-United Kingdom Mutual Defence and Assistance Agreement[10][11]   Mauritius
  United Kingdom
1970–1974 Alcora Exercise   Portugal
  Rhodesia
  South Africa
1971 Five Power Defence Arrangements   Australia
  Malaysia
  New Zealand
  Singapore
  United Kingdom
1975–1994 Israel–South Africa Agreement   Israel
  South Africa
1979 Taiwan Relations Act   Taiwan
  United States
1982 Regional Security System
List
1984 Peninsula Shield Force   Bahrain
  Kuwait
  Oman
  Qatar
  Saudi Arabia
  United Arab Emirates
1992 Collective Security Treaty Organization (CSTO)   Armenia
  Belarus
  Kazakhstan
  Kyrgyzstan
  Russia
  Tajikistan
1997 Union State   Belarus
  Russia
1999   European Union[note 7]
List
[12]

2000–Present

Years Name Members
2010 Agreement on Strategic Partnership and Mutual Support[note 8]   Azerbaijan
  Turkey
2010 Lancaster House Treaties   France
  United Kingdom
2014 Enhanced Defense Cooperation Agreement   Philippines
  United States
2015 Islamic Military Counter Terrorism Coalition
2015 Russia–Syria–Iran–Iraq coalition   Iran
  Iraq
  Russia
  Syria
  Hezbollah
2015–2020 U.S.–Afghanistan Strategic Partnership Agreement   Afghanistan
  United States
2017 Anglo-Polish Defense Treaty[13]   United Kingdom
  Poland
2019 US-Greece Defense Agreement[14][15]   Greece
  United States
2020 Lublin Triangle   Lithuania
  Poland
  Ukraine
2021 AUKUS   Australia
  United Kingdom
  United States
2021 Franco-Greek defence agreement   France
  Greece
2021 Shusha Declaration   Azerbaijan
  Turkey
2021 Israel-United Kingdom Defence Pact[16][17]   Israel
  United Kingdom
2021 US-Jordan Defense Cooperation Agreement[18]   Jordan
  United States
2022 British–Polish–Ukrainian trilateral pact   Poland
  Ukraine
  United Kingdom[19]
2022 Treaty of Friendship, Cooperation and Mutual Assistance between the Russian Federation and the Lugansk People's Republic[20][21]   Luhansk
  Russia
2022 Treaty of Friendship, Cooperation and Mutual Assistance between the Russian Federation and the Donetsk People's Republic[20][21]   Donetsk
  Russia
2022 Solomon Islands-China Security Pact[22][23]   China
  Solomon Islands
2022 UK-Sweden Defence Agreement[24][25]   Sweden
  United Kingdom
2022 UK-Finland Defence Agreement[26][25]   Finland
  United Kingdom
2022 UK-Oman Mutual Defence Agreement[27]   Oman
  United Kingdom
2022 Egypt-Iraq-Jordan Entente[28]   Egypt
  Iraq
  Jordan
2022 Japan-Australia Reciprocal Access Agreement   Australia
  Japan
2023 Anglo-Japanese Reciprocal Access Agreement[29]   Japan
  United Kingdom
2023 Anglo-Greek Defence Agreement[30][31]   Greece
  United Kingdom

Proposed alliances

Instrument Countries
CANZUK is a proposed alliance between four Commonwealth realms   Australia
  Canada
  New Zealand
  United Kingdom
United States-Israel Strategic Partnership is a proposal to make a formal alliance between the United States and Israel   Israel
  United States
France-Japan Reciprocal Access Agreement is currently being negotiated to finalize a formal alliance between Japan and France.[32]   France
  Japan
EU-UK Mutual Defence Agreement is a proposal, most notably from the Labour Party, to sign a formal alliance between the EU and the UK.[33]   European Union
  United Kingdom
South Korea-Japan Defense Pact[34] is a proposed alliance between South Korea & Japan in response to increased aggression from North Korea.   Japan
  South Korea
Mauritius-United Kingdom Defence Agreement is a proposal to sign a military alliance between Mauritius and the UK as part of an effort to resolve the Chagos Archipelago sovereignty dispute.[35]   Mauritius
  United Kingdom
Japan-Philippines-United States trilateral alliance is currently being negotiated in response to increased military build-up from China.[36]   Japan
  Philippines
  United States

See also

Notes

References

  1. ^ "The Moroccan-American Treaty of Peace and Friendship, [28 June …". Founders.archives.gov. Retrieved 6 May 2023.
  2. ^ Treaty of Alliance wikimedia.org
  3. ^ "United Kingdom And Ceylon (Defence Agreement) - Hansard - UK Parliament". Retrieved 6 May 2023.
  4. ^ Barnes, Robert (2022). "'In the Mutual Interest': The Making and Breaking of the United Kingdom-Ceylon Defence Agreement, 1947–1957". The Journal of Imperial and Commonwealth History. 50 (6): 1093–1122. doi:10.1080/03086534.2022.2084932. S2CID 249944469.
  5. ^ SOU 1994:11 Om kriget kommit... Förberedelser för mottagande av militärt bistånd 1949–1969
  6. ^ "Technical Difficulties".
  7. ^ Marco Wyss Marco Wyss (22 April 2021). "The Anglo-Nigerian Defence Agreement | Postcolonial Security: Britain, France, and West Africa's Cold War | Oxford Academic". Academic.oup.com. Retrieved 6 May 2023.
  8. ^ "Anglo-Maltese Defence Agreement - Hansard - UK Parliament". Retrieved 6 May 2023.
  9. ^ Wall, Michael (31 May 2019). "Hussein and Nasser sign defence agreement - archive, 1967 | Middle East and north Africa". The Guardian. Retrieved 6 May 2023.
  10. ^ "MAURITIUS - UNITED KINGDOM Agreement on Mutual Defence and Assistance". The National Archives. Retrieved 28 April 2023.
  11. ^ Houbert, Jean (8 November 2008). "Mauritius: Independence and Dependence". The Journal of Modern African Studies. 19: 75–105. doi:10.1017/S0022278X00054136. S2CID 154753371. Retrieved 28 April 2023.
  12. ^ "TEU 42.7: "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, in accordance with Article 51 of the United Nations Charter. This shall not prejudice the specific character of the security and defence policy of certain Member States."". The Treaty on European Union. Retrieved 22 February 2022.{{cite web}}: CS1 maint: url-status (link)
  13. ^ "UK, Poland sign strategic partnership". 7 July 2023.
  14. ^ "US, Greece Sign Revised Defense Cooperation Agreement". US News. Retrieved 3 November 2019.
  15. ^ "Greece, US hail strategic relationship after signing defence deal". The New Athenian. Retrieved 4 November 2019.
  16. ^ Sabbagh, Dan; Defence, Dan Sabbagh (28 November 2021). "Britain and Israel to sign trade and defence deal | Trade policy". The Guardian. Retrieved 6 May 2023.
  17. ^ Millis, Joe (7 December 2020). "UK and Israel sign agreement on military cooperation". Jewish News. Retrieved 6 May 2023.
  18. ^ Jordan (21-317) – Defense Cooperation Agreement state.gov
  19. ^ "Ukraine, UK, Poland announce security pact amid heightened tensions". 17 February 2022.
  20. ^ a b "The State Duma ratified Treaties of Friendship with the Donetsk and Lugansk People's Republics". 22 February 2022.
  21. ^ a b "Russia now has right to build military bases in eastern Ukraine - treaties". Reuters. 22 February 2022.
  22. ^ "Solomon Islands signs China pact, defying Australia". Taipei Times. 20 April 2022. Retrieved 20 April 2022.
  23. ^ Kim, Patricia M. (6 May 2022). "Does the China-Solomon Islands security pact portend a more interventionist Beijing?". Brookings Institute.
  24. ^ "UK-Sweden Political Declaration of Solidarity". GOV.UK. 11 May 2022.
  25. ^ a b "Sweden, Finland Sign Defense Treaty with the U.K. Ahead of Joining NATO". National Review. 11 May 2022.
  26. ^ "UNITED KINGDOM - FINLAND STATEMENT HELSINKI, 11 MAY 2022" (PDF). GOV.UK. 11 May 2022.
  27. ^ "Oman, UK sign mutual defence agreement". Times of Oman. Retrieved 6 May 2023.
  28. ^ "Iraq-Jordan-Egypt Entente Moves Ahead Despite the GCC's Shadow". Arab Center Washington DC. Retrieved 6 May 2023.
  29. ^ "UK, Japan sign defense deal amid rising concern about China". ABC News. Retrieved 6 May 2023.
  30. ^ "UK and Greece seek strengthened Defence partnership". GOV.UK. 7 February 2023. Retrieved 6 May 2023.
  31. ^ "UK, Greece Seek Strengthened Defence Partnership". 8 February 2023. Retrieved 6 May 2023.
  32. ^ "Japan, France Vow to Enhance Defense Cooperation at 2-Plus-2 Talks". 21 January 2022.
  33. ^ "Lammy at em securing a security pact with Europe". 1 February 2023.
  34. ^ "S. Korea looks to revive military pact with Japan upon thaw". Koreaherald.com. 9 March 2023. Retrieved 6 May 2023.
  35. ^ Scott, David (7 June 2018). "Britain Returns to the Indian Ocean?". The Round Table. 107 (3): 307–316. doi:10.1080/00358533.2018.1476096. S2CID 158788448.
  36. ^ Heydarian, Richard Javad (6 April 2023). "The Japan-Philippine-U.S. Trilateral alliance in the making". The Japan Times.