Peremptory norm of international law

Filed Under: International Law

2 definitions found for this term.
Definitions are presented in the order source books were published (most recent first).

Norm accepted and recognized by the international community of states as a whole, as a norm from which no derogation is permitted and which can be modified only by a subsequent norm of the same character. Effectively an entrenched custom. Treaties contrary to peremptory norms are void.


A rule of international law so fundamental to the international legal order that it cannot be set aside or suspended, even upon the express consent of states.

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