Defense pact

A defense pact (Commonwealth spelling: defence pact) is a type of treaty or military alliance in which the signatories promise to support each other militarily and to defend each other. Generally, the signatories point out the threats and concretely prepare to respond to it together.

Current mutual defence treaties and alliances
Year in force Name Member states
Treaty name Also known as Present members Former / suspended members
1947 Inter-American Treaty of Reciprocal Assistance Rio Treaty
TIAR
1949 North Atlantic Treaty Washington Treaty
NATO
1951 Mutual Defense Treaty (United States–Philippines)
1951 ANZUS Australia, New Zealand, United States Security Treaty
1953 Mutual Defense Treaty (United States–South Korea)
1960 Treaty of Mutual Cooperation and Security between the United States and Japan
1961 Sino-North Korean Mutual Aid and Cooperation Friendship Treaty Sino-North Korean Treaty of Friendship, Co-operation and Mutual Assistance
1962 Thanat–Rusk communiqué
1992 Collective Security Treaty Organization CSTO
Collective Security Treaty
2000 The Joint Defence Agreement of the Cooperation Council for the Arab States of the Gulf (CCASG) GCC Joint Defence Agreement
2008 South African Development Community (SADC) Mutual Defence Pact
2009 Treaty of Lisbon (Common Security and Defence Policy provisions) CSDP
European Union mutual defence clause (Article 42.7 TEU)
2010 Agreement on Strategic Partnership and Mutual Support
2021 Franco-Greek defence agreement
2021 AUKUS
2023 Alliance of Sahel States AES
2024 North Korean–Russian Treaty on Comprehensive Strategic Partnership
2025 Strategic Mutual Defence Agreement SMDA
2025 Pukpuk Treaty Papua New Guinea–Australia Mutual Defence Treaty
2026 Ocean of Peace Alliance Veitacini Treaty
2026 Mecca Defence Alliance Mecca Joint Defence Agreement
2026 Shield of the Americas Americas Counter Cartel Coalition

Historical treaties

Year Treaty name Member States
1778–1798 Treaty of Alliance
1873–1887 League of the Three Emperors
1921–1938 Little Entente
1934–1941 Balkan Pact
1950–1979 Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance
1954–1977 Southeast Asia Treaty Organization
1955–1979 Central Treaty Organization
1955–1979 Sino-American Mutual Defense Treaty
1955–1991 Warsaw Pact

See also

References

  1. ↑ Volker Krause, J. David Singer "Minor Powers, Alliances, And Armed Conflict: Some Preliminary Patterns", in "Small States and Alliances and addons conductory", 2001, pp 15–23, ISBN 978-3-7908-2492-6 (Print) ISBN 978-3-662-13000-1 (Online)
  2. ↑ Fulvio Attinà "State aggregation in defense pacts: systemic explanations", Jean Monnet Working Papers, University of Catania, nr. 56, November 2004, ISSN 2281-9029
  3. ↑ "South African Development Community (SADC) Mutual Defence Pact" (PDF). 26 August 2003. Retrieved 16 August 2026.{{cite web}}: CS1 maint: url-status (link)