78. Obligation not to defeat the object and purpose of a treaty prior to its entry into force.

78.     Obligation not to defeat the object and purpose of a treaty prior to its entry into force.

According to the Vienna Convention on the Law of treaties, a state is obliged to refrain from acts which would defeat the object and purpose of a treaty1 when: (1) it has signed the treaty or has exchanged instruments constituting the treaty subject to ratification, acceptance or approval2, until it has made its intention clear not to become a party to the treaty3; or (2) it has expressed its consent to be bound by the treaty,