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List of military alliances

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Title: List of military alliances  
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Subject: Military alliance, International relations, Western European Union, NATO
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List of military alliances

Europe divided by two competing military alliances during the Cold War

A military alliance is agreement between two, or more, military factions; related to wartime planning, commitments, or contingencies; such agreements can be both defensive and offensive. Military alliances often involve non-military agreements, in addition to their primary purpose.


Vedic Period

Hellenic Period

Confederate alliance of Greek city-states

Middle Ages

Early modern period

Nineteenth century

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

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

Twenty-first century

Contemporary Security Alliances






South America


Africa and Asia

Africa and North America

Asia and Europe

Asia and North America

North America and Oceania

North America and South America

South America and Africa



See also


  • Liska, George. Alliances and the Third World. Baltimore: Johns Hopkins Press, 1968.
  • Pressman, Jeremy. Warring Friends: Alliance Restraint in International Politics. Ithaca: Cornell University Press, 2008.
  • Snyder, Glenn H. Alliance Politics. Ithaca: Cornell University Press, 1997.
  • Walt, Stephen. The Origins of Alliances. Ithaca: Cornell University Press, 1987.
  • Weitsman, Patricia. Dangerous Alliances. Palo Alto: Stanford University Press, 2004.
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