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Part XI Disputes, 33 Use or threat of force by states

James Crawford SC, FBA

From: Brownlie's Principles of Public International Law (9th Edition)

James Crawford

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2023. All Rights Reserved.date: 22 May 2024

Use of force, threat — Aggression — Self-defence — Collective security — Peace keeping

This chapter discusses international law governing the use or threat of force by states. The UN Security Council has primary responsibility for enforcement action to deal with breaches of the peace, threats to the peace, or acts of aggression. Individual member states have the right of individual or collective self-defence, but only ‘until the Security Council has taken measures necessary to maintain international peace and security’. However, the practice has evolved of authorizing peacekeeping operations that are contingent upon the consent of the state whose territory is the site of the operations.

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