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) the possibility of such a suspension is provided for by the treaty; or
(b) the suspension in question is not prohibited by the treaty and:
(i) does not affect the enjoyment by the other parties of their rights under the treaty or the performance of their obligations;
(ii) is not incompatible with the object and purpose of the treaty.
2. Unless in a case falling under paragraph 1 (a) the treaty otherwise provides, the parties in question shall notify the other parties of their intention to conclude the agreement and of those provisions of the treaty the operation of which they intend to suspend.
See also: Article 57 Vienna Convention on the Law of Treaties
