AI reviewed · sources pending. Book associations have not been verified.
Defensive alliance
ConceptAn agreement to resist attacks need not authorize joint offensive action.
Explanation or usage
Alliances specify conditions for assistance; they do not necessarily make every conflict a shared war. A defensive agreement may offer protection without requiring participation in attacks initiated by a partner. Its practical effects depend on the agreement's terms and how they are interpreted during a crisis.
Common misunderstandings
An alliance automatically requires joining every attack by an ally.
In The History of the Peloponnesian War
General context reviewed · book attribution and sources pending
Athens agreed to a defensive alliance with Corcyra while seeking to avoid breaking its existing treaty with Sparta. The arrangement was framed as defensive assistance, rather than support for offensive action.