1. This Convention shall apply to all non-self-governing trust, colonial and other non-metropolitan territories for the international relations of which any State Party is responsible; the Party concerned shall, subject to the provisions of paragraph 2 of this article, at the time of signature, ratification or accession declare the non-metropolitan territory or territories to which the Convention shall apply ipso facto as a result of such signature, ratification or accession.

2. In any case in which the previous consent of a non-metropolitan territory is required by the constitutional laws or practices of the Party or of the non-metropolitan territory, the Party concerned shall endeavour to secure the needed consent of the non-metropolitan territory within the period of twelve months from the date of signature of the Convention by the metropolitan State, and when such consent has been obtained the Party shall notify the Secretary-General. This Convention shall apply to the territory or territories named in such notification from the date of its receipt by the Secretary General.

3. After the expiry of the twelve-month period mentioned in the preceding paragraph, the States Parties concerned shall inform the Secretary-General of the results of the consultations with those non-metropolitan territories for whose international relations they are responsible and whose consent to the application of this Convention may have been withheld.