noun
A fundamental principle of international law that is accepted by the international community as a norm from which no derogation is permitted.
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Jus cogens refers to peremptory norms of international law that are non-derogable and universally accepted.
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Jus cogens is like the 'top dog' of international law that everyone has to follow.
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Jus cogens is the 'big boss' of international law.
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In the world of international law, jus cogens is like the unbreakable chain that holds everything together.