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Vienna Convention on the Law of Treaties
PART-V: INVALIDITY, TERMINATION AND SUSPENSION OF THE OPERATION OF TREATIES
SECTION-3: TERMINATION AND SUSPENSION OF THE OPERATION OF TREATIES
ARTICLE 64: Emergence of a new peremptory norm of general international law (jus cogens)
ARTICLE 64: Emergence of a new peremptory norm of general international law (jus cogens)
If a new peremptory norm of general international law emerges, any existing treaty which is in conflict with that norm becomes void and terminates.