Article 46 Vienna Convention on the Law of Treaties Provisions of internal law regarding competence to conclude treaties 1. A State may not invoke the fact that its consent to be bound by a treaty has been expressed in violation of a provision of its internal law regarding competence to conclude treaties as invalidating its…

Article 45 Vienna Convention on the Law of Treaties Loss of a right to invoke a ground for invalidating, terminating, withdrawing from or suspending the operation of a treaty A State may no longer invoke a ground for invalidating, terminating, withdrawing from or suspending the operation of a treaty under articles 46 to 50 or…

Article 44 Vienna Convention on the Law of Treaties Separability of treaty provisions 1. A right of a party, provided for in a treaty or arising under article 56, to denounce, withdraw from or suspend the operation of the treaty may be exercised only with respect to the whole treaty unless the treaty otherwise provides…

Article 43 Vienna Convention on the Law of Treaties Obligations imposed by international law independently of a treaty The invalidity, termination or denunciation of a treaty, the withdrawal of a party from it, or the suspension of its operation, as a result of the application of the present Convention or of the provisions of the…

Article 42 Vienna Convention on the Law of Treaties Validity and continuance in force of treaties 1. The validity of a treaty or of the consent of a State to be bound by a treaty may be impeached only through the application of the present Convention. 2. The termination of a treaty, its denunciation or…

Article 41 Vienna Convention on the Law of Treaties Agreements to modify multilateral treaties between certain of the parties only 1. Two or more of the parties to a multilateral treaty may conclude an agreement to modify the treaty as between themselves alone if: (a) the possibility of such a modification is provided for by…

Article 40 Vienna Convention on the Law of Treaties Amendment of multilateral treaties 1. Unless the treaty otherwise provides, the amendment of multilateral treaties shall be governed by the following paragraphs. 2. Any proposal to amend a multilateral treaty as between all the parties must be notified to all the contracting States, each one of…

Article 39 Vienna Convention on the Law of Treaties General rule regarding the amendment of treaties A treaty may be amended by agreement between the parties. The rules laid down in Part II apply to such an agreement except insofar as the treaty may otherwise provide. See also: Article 38 Vienna Convention on the Law…

Article 38 Vienna Convention on the Law of Treaties Rules in a treaty becoming binding on third States through international custom Nothing in articles 34 to 37 precludes a rule set forth in a treaty from becoming binding upon a third State as a customary rule of international law, recognized as such. See also: Article…

Article 37 Vienna Convention on the Law of Treaties Revocation or modification of obligations or rights of third States 1. When an obligation has arisen for a third State in conformity with article 35, the obligation may be revoked or modified only with the consent of the parties to the treaty and of the third…