List of military alliances

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Warning: Many alliances on This list will be in the wrong places, or perhaps don't even exist. Please be weary that some of these military alliances do not mean that the country will help the other always because some alliances are only for a single cause. It will also be confusing to know if it's a defense alliance or not. Last thing is that some of these alliances are economic, not military because of human errors. Wikipedia is not always right, so you will need to double check some things, just in case. Anyways. This is the list of military alliances. A military alliance is an international agreement 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.

Historical examples[edit]

Ancient Period[edit]

Alliance Timespan Members
Latin League 7th century - 334 BC Various tribes in Latium
Peloponnesian League 6th century - 3 BC Various city-states in the Peloponnese, dominated by Sparta
Foedus Cassianum 493 BC Treaty between Roman Republic and Latin League
Delian League 478 - 404 BC See article
Second Athenian League 378 - 355 BC Various city-states around the Aegean, led by Athens
League of Corinth 338 - 322 BC Greek states, excluding Sparta
Agreement between Rome and the nation of the Jews 2nd century BC Rome and the Jewish nation, according to the First Book of Maccabees[1][2]

Medieval Period[edit]

Early Modern Period[edit]

Nineteenth century[edit]

All the participants in the Napoleonic Wars. Blue: The Coalition and their colonies and allies. Green: The First French Empire, its protectorates, colonies, and allies.
Holy Alliance 1815.

Twentieth century[edit]

Alliances in the First World War
Alliances in the Second World War
Alliances during the Cold War (1980)

Current military-security alliances[edit]


Organization Countries
 African Union  Algeria Angola Benin Botswana Burkina Faso Burundi Djibouti Egypt Eritrea South Africa South Sudan Ethiopia Gabon Gambia Ghana Guinea Guinea-Bissau Cameroon Cape Verde Kenya Central African Republic Comoros Democratic Republic of the Congo Republic of Congo Lesotho Liberia Libya Madagascar Malawi Mali Morocco Mauritania Mauritius Mozambique Namibia Niger Nigeria Ivory Coast Equatorial Guinea Rwanda Sahrawi Arab Democratic Republic Zambia São Tomé and Príncipe Senegal Seychelles Sierra Leone Somalia Sudan Swaziland Tanzania Togo Chad Tunisia Uganda Zimbabwe
Economic Community of West African States  Nigeria Niger Burkina Faso Guinea Guinea-Bissau Senegal Togo Sierra Leone Mali Liberia Ivory Coast Ghana The Gambia Cabo Verde Benin
Economic Community of Central African States  Angola Burundi Cameroon Central African Republic Chad Democratic Republic of the Congo Republic of the Congo Gabon Equatorial Guinea Rwanda Sao Tome and Principe


Organization Countries
Axis of Resistance  Iran Syria


Peninsula Shield Force The military force of the Gulf Cooperation Council  Saudi Arabia UAE Qatar Oman Kuwait Bahrain
Shanghai Cooperation Organisation (SCO)  China Russia India Kazakhstan Kyrgyzstan Tajikistan Uzbekistan Pakistan
Sino-North Korean Mutual Aid and Cooperation Friendship Treaty  China North Korea
 ASEAN Association of Southeast Asian Nations (ASEAN)  Thailand Cambodia Laos Vietnam Myanmar Philippines Indonesia Malaysia Singapore Brunei
Organization of the Eurasian Law Enforcement Agencies with Military Status  Turkey Kyrgyzstan Azerbaijan
Shusha Declaration About Alliance  Turkey Azerbaijan


Organization Countries
Anglo-Portuguese Alliance  UK Portugal
Entente Cordiale/ Defence and Security Co-operation Treaty  France United Kingdom
The  European Union maintains a Common Security and Defence Policy, including a mutual defence clause  Germany Latvia France Lithuania Estonia Portugal Belgium Austria Bulgaria Croatia Sweden Cyprus Czechia Denmark Finland Ireland Hungary Greece Italy Luxembourg Malta Netherlands Poland Romania Slovakia Slovenia Spain


Organization Countries
Australian and New Zealand Army Corps (ANZAC)  Australia New Zealand
Treaty of Friendship between the Government of New Zealand and the Government of Western Samoa  New Zealand Samoa [3]


Africa and Asia[edit]

Organization Countries
 Arab League  Saudi Arabia Yemen United Arab Emirates Bahrain Oman Iraq  Jordan Lebanon Egypt Libya Tunisia Algeria Morocco Palestine Sudan Djibouti Somalia Comoros Kuwait Qatar Mauritania
Islamic Military Alliance (IMCTC)  Saudi Arabia Egypt Libya Tunisia Morocco Mali Mauritania Sudan Somalia Chad Nigeria Niger UAE Yemen Qatar Bahrain Turkey Pakistan Bangladesh Malaysia Djibouti Benin Jordan Kuwait Lebanon Maldives Oman Palestine Senegal Sierra Leone Togo Gabon Eritrea Comoros Ivory Coast

Africa and South America[edit]

Organization Countries
South Atlantic Peace and Cooperation Zone(ZPCAS)  Brazil Argentina Uruguay South Africa Angola Nigeria Benin Cameroon Cabo Verde Republic of the Congo Democratic Republic of the Congo Ivory Coast Ghana Guinea-Bissau Guinea Liberia Namibia Gabon Equatorial Guinea The Gambia Togo Senegal Sierra Leone Sao Tome and Principe


Organization Countries
 OAS Organization of American States  Argentina Bolivia Brazil Chile Costa Rica Dominican Republic Ecuador El Salvador Guatemala Haiti Honduras Colombia Mexico Nicaragua Panama Paraguay Peru Uruguay United States Barbados Trinidad and Tobago Jamaica Grenada Suriname Dominica Saint Lucia Antigua and Barbuda Saint Vincent and the Grenadines Bahamas Saint Kitts and Nevis Canada Belize Guyana
Inter-American Defense Board Rio Pact  USA Brazil Argentina Chile Uruguay Paraguay Colombia Haiti Dominican Republic El Salvador Guatemala Peru The Bahamas Trinidad and Tobago Costa Rica Panama Honduras Venezuela (Guaidó government)
 CARICOM Caribbean Community (CARICOM)  Antigua and Barbuda Bahamas Barbados Belize Dominica Grenada Guyana Haiti Jamaica Montserrat St. Kitts and Nevis St. Lucia St. Vincent and the Grenadines Suriname Trinidad and Tobago
Regional Security System  Antigua and Barbuda Barbados Dominica St. Kitts and Nevis St. Lucia St. Vincent and the Grenadines Grenada
 Union of South American Nations  Venezuela Bolivia Peru Guyana Suriname
Forum for the Progress and Development of South America (PROSUR)  Brazil Argentina Chile Colombia Peru Ecuador Paraguay Guyana
North American Aerospace Defense Command (NORAD)  United States Canada


Organization Countries
 Collective Security Treaty Organization  Armenia Belarus Kazakhstan Kyrgyzstan Russia Tajikistan
Union State  Russia Belarus
Agreement on Strategic Partnership and Mutual Support  Turkey Azerbaijan
2001 Sino-Russian Treaty of Friendship  China Russia
RSII Coalition  Russia Syria Iran Iraq


United Kingdom and Israel have agreed to expand military cooperation and formalize an alliance.[4]  United Kingdom Israel
GUAM Organization for Democracy and Economic Development  Georgia Ukraine Azerbaijan Moldova

Europe and North America[edit]

Organization Countries
NATO flag.svg NATO, Enlarged from 1999  United States United Kingdom France Canada Belgium Denmark Iceland Italy Luxembourg  Netherlands Norway Portugal Greece Turkey Germany Spain Czech Republic Hungary Poland Bulgaria Estonia Latvia Lithuania Romania Slovakia Slovenia Albania Croatia Montenegro North Macedonia

North America and Africa[edit]

Instrument Countries
Moroccan-American Treaty of Friendship  United States Morocco

North America and Asia[edit]

Instrument Countries
US-Israel Strategic Partnership Declares Israel a major strategic partner of the United States and allows a greater mutual cooperation in defense and other categories  United States Israel
United States and Japan entered into a security alliance following the allied occupation after WWII.  United States Japan
United States and Pakistan entered into a Mutual Defense Assistant Agreement following Liaquat Ali Khan's state visit to the United States to counter Sino-Soviet ambitions in South Asia and Middle East.  United States Pakistan
United States and The Philippines entered into a Mutual Defense Treaty following the former's independence after liberation.  United States Philippines
United States and South Korea entered into a Mutual Defense Treaty following the Korean War  United States South Korea
Taiwan Relations Act between requires the United States to supply arms to Taiwan, and optionally intervene in the event of a Chinese invasion.  United States Taiwan
United States designated India as a 'major defense partner' in 2016.[5]  United States India

North America and Oceania[edit]

Instrument Countries
ANZUS  United States Australia New Zealand (partially suspended)
Compact of Free Association  United States Palau Micronesia Marshall Islands

Oceania and Asia[edit]

Instrument Countries
Reciprocal Access Agreement (RAA)  Australia Japan


Instrument Countries
ABCA Armies, Air and Space Interoperability Council and AUSCANNZUKUS is collectively known as the Five Eyes  United States United Kingdom Canada Australia New Zealand
Five Power Defence Arrangements  United Kingdom Australia New Zealand Singapore Malaysia
AUKUS  Australia United Kingdom United States
Quadrilateral Security Dialogue  Australia India Japan United States


Instrument Countries
Multinational Force and Observers  United Nations
Department of Peacekeeping Operations  United Nations
United Nations Security Council  United Nations
Combined Maritime Forces (CMF) is a series of three 34-nation naval task forces, each with a specific role including; anti-piracy, anti-terrorism, and maritime security.[6]  United States United Kingdom Canada Australia New Zealand France Italy Germany Spain Portugal Netherlands Belgium Denmark Norway Brazil Greece Turkey Saudi Arabia UAE Kuwait Iraq Qatar Yemen Japan South Korea Thailand Philippines Singapore Brunei Jordan Seychelles Bahrain Pakistan Malaysia
International Association of Gendarmeries and Police Forces with Military Status  France Italy Spain Portugal Netherlands Romania Turkey Chile Argentina Ukraine Palestine Qatar Djibouti Tunisia Jordan Morocco Brazil Kuwait Senegal
International Maritime Security Construct  Albania Bahrain Estonia Lithuania Saudi Arabia UAE United Kingdom United States
Major non-NATO ally - Major allies of the United States, but not a member of NATO.  United States Australia New Zealand South Korea Japan Taiwan Philippines Thailand Pakistan Kuwait Jordan Israel Egypt Tunisia Brazil Argentina Morocco Bahrain

Proposed alliance[edit]


Instrument Countries
CANZUK is a proposed alliance between the major nations of the Commonwealth realm  United Kingdom Canada Australia New Zealand


  1. ^ 1 Maccabees 8:23–32: New Revised Standard Version
  2. ^ Rappaport, U., 47. 1 Maccabees in Barton, J. and Muddiman, J. (2001), The Oxford Bible Commentary, p. 718-722
  3. ^ "New Zealand Treaties Online - Details". Retrieved 2021-06-01.
  4. ^ "UK and Israel sign military cooperation agreement". 7 December 2020.
  5. ^
  6. ^ "Combined Maritime Forces (CMF)".