Article 64 Vienna Convention on the Law of Treaties 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. See also: Article 63 Vienna Convention on the Law of…

Article 63 Vienna Convention on the Law of Treaties Severance of diplomatic or consular relations The severance of diplomatic or consular relations between parties to a treaty does not affect the legal relations established between them by the treaty except insofar as the existence of diplomatic or consular relations is indispensable for the application of…

Article 62 Vienna Convention on the Law of Treaties Fundamental change of circumstances 1. A fundamental change of circumstances which has occurred with regard to those existing at the time of the conclusion of a treaty, and which was not foreseen by the parties, may not be invoked as a ground for terminating or withdrawing…

Article 61 Vienna Convention on the Law of Treaties Supervening impossibility of performance 1. A party may invoke the impossibility of performing a treaty as a ground for terminating or withdrawing from it if the impossibility results from the permanent disappearance or destruction of an object indispensable for the execution of the treaty. If the…

Article 60 Vienna Convention on the Law of Treaties Termination or suspension of the operation of a treaty as a consequence of its breach 1. A material breach of a bilateral treaty by one of the parties entitles the other to invoke the breach as a ground for terminating the treaty or suspending its operation…

Article 59 Vienna Convention on the Law of Treaties Termination or suspension of the operation of a treaty implied by conclusion of a later treaty 1. A treaty shall be considered as terminated if all the parties to it conclude a later treaty relating to the same subject matter and: (a) it appears from the…

Article 58 Vienna Convention on the Law of Treaties Suspension of the operation of a multilateral treaty by agreement between certain of the parties only 1. Two or more parties to a multilateral treaty may conclude an agreement to suspend the operation of provisions of the treaty, temporarily and as between themselves alone, if: (a)…

Article 57 Vienna Convention on the Law of Treaties Suspension of the operation of a treaty under its provisions or by consent of the parties The operation of a treaty in regard to all the parties or to a particular party may be suspended: (a) in conformity with the provisions of the treaty; or (b)…

Article 56 Vienna Convention on the Law of Treaties Denunciation of or withdrawal from a treaty containing no provision regarding termination, denunciation or withdrawal 1. A treaty which contains no provision regarding its termination and which does not provide fordenunciation or withdrawal is not subject to denunciation or withdrawal unless: (a) it is established that…

Article 55 Vienna Convention on the Law of Treaties Reduction of the parties to a multilateral treaty below the number necessary for its entry into force Unless the treaty otherwise provides, a multilateral treaty does not terminate by reason only of the fact that the number of the parties falls below the number necessary for…