Page:Vienna Convention on the Law of Treaties (1969).djvu/7

 the treaty provides for such consent to be expressed by means of ratification;
 * (b) it is otherwise established that the negotiating States were agreed that ratification should be required;
 * (c) the representative of the State has signed the treaty subject to ratification; or
 * (d) the intention of the State to sign the treaty subject to ratification appears from the full powers of its representative or was expressed during the negotiation.

2. The consent of a State to be bound by a treaty is expressed by acceptance or approval under conditions similar to those which apply to ratification.

Article 15. Consent to be bound by a treaty expressed by accession
The consent of a State to be bound by a treaty is expressed by accession when:
 * (a) the treaty provides that such consent may be expressed by that State by means of accession;
 * (b) it is otherwise established that the negotiating States were agreed that such consent may be expressed by that State by means of accession; or
 * (c) all the parties have subsequently agreed that such consent may be expressed by that State by means of accession.

Article 16. Exchange or deposit of instruments of ratification, acceptance, approval or accession
Unless the treaty otherwise provides, instruments of ratification, acceptance, approval or accession establish the consent of a State to be bound by a treaty upon:
 * (a) their exchange between the contracting States;
 * (b) their deposit with the depositary; or
 * (c) their notification to the contracting States or to the depositary, if so agreed.

Article 17. Consent to be bound by part of a treaty and choice of differing provisions
1. Without prejudice to articles 19 to 23, the consent of a State to be bound by part of a treaty is effective only if the treaty so permits or the other contracting States so agree.