Page:Vienna Convention on the Law of Treaties between States and International Organizations or Between International Organizations (1986).djvu/15



Every treaty in force is binding upon the parties to it and must be performed by them in good

1. A State party to a treaty may not invoke the provisions of its internal law as justification for its failure to perform the treaty.

2. An international organization party to a treaty may not invoke the rules of the organization as justification for its failure to perform the treaty.

3. The rules contained in the preceding paragraphs are without prejudice to article 46.

Unless a different intention appears from the treaty or is otherwise established, its provisions do not bind a party in relation to any act or fact which took place or any situation which ceased to exist before the date of the entry into force of the treaty with respect to that party.

Unless a different intention appears from the treaty or is otherwise established, a treaty between one or more States and one or more international organizations is binding upon each State party in respect of its entire territory.

1. The rights and obligations of States and international organizations parties to successive treaties relating to the same subject matter shall be determined in accordance with the following paragraphs.