Jus Ad Bellum
/ˈjuːs æd ˈbɛləm/
Definitions
- (n.) The body of law or principles governing the justification for resorting to war or armed force.
Under jus ad bellum, a state must demonstrate a legitimate reason before initiating military action.
- (n.) Legal criteria used to determine whether entering a conflict is lawful, including just cause, proper authority, right intention, and last resort.
The international community examines jus ad bellum criteria to assess the legality of a state's declaration of war.
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Commentary
Jus ad bellum addresses the legality of initiating war, distinct from jus in bello, which governs conduct within war.
This glossary is for general informational and educational purposes only. Definitions are jurisdiction-agnostic but reflect terminology and concepts primarily drawn from English and American legal traditions. Nothing herein constitutes legal advice or creates a lawyer-client relationship. Users should consult qualified counsel for advice on specific matters or jurisdictions.