(c) if the United Nations or an international organization that is authorized in accordance with Article 96 of the Charter of the United Nations is a party to the dispute, it may request an advisory opinion of the International Court of Justice in accordance with Article 65 of the Statute of the Court;
(d) if an international organization other than those referred to in subparagraph (c) is a party to the dispute, it may, through a Member State of the United Nations, follow the procedure specified in subparagraph (b);
(e) the advisory opinion given pursuant to subparagraph (b), (c) or (d) shall be accepted as decisive by all the parties to the dispute concerned;
(f) if the request under subparagraph (b), (c) or (d) for an advisory opinion of the Court is not granted, any one of the parties to the dispute may, by written notification to the other party or parties, submit it to arbitration in accordance with the provisions of the Annex to the present Convention.
3.The provisions of paragraph 2 apply unless all the parties to a dispute referred to in that paragraph by common consent agree to submit the dispute to an arbitration procedure, including the one specified in the Annex to the present Convention.
4. With respect to a dispute concerning the application or the interpretation of any of the articles in Part V, other than articles 53 and 64, of the present Convention, any one of the parties to the dispute may set in motion the conciliation procedure specified in the Annex to the Convention by submitting a request to that effect to the Secretary-General of the United Nations.
Article 67
Instrument,' for declaring invalid, terminating, withdrawing from
or suspending the operation of a treaty
1. The notification provided for under article 65, paragraph 1, must be made in writing.
2. Any act declaring invalid, terminating, withdrawing from or suspending the operation of a treaty pursuant to the provisions of the treaty or of paragraphs 2 or 3 of article 65 shall be carried out through an instrument communicated to the other parties. If the instrument emanating from a State is not signed by the Head of State, Head of Government or Minister for Foreign Affairs, the representative of the State communicating it may be called upon to produce full powers. If the instrument emanates from an international organization, the representative of the organization communicating it may be called upon to produce full powers.
Article 68
Revocation of notifications and instruments provided for
in articles 65 and 67
A notification or instrument provided for in articles 65 or 67 may be revoked at any time before it takes effect.
