Article XIII

Any Contracting State may, at the time of deposit of its instrument of ratification, acceptance or accession, or at any time thereafter, declare by notification addressed to the Director-General of the United Nations Educational, Scientific and Cultural Organization that this Convention shall apply to all or any of the countries or territories for the international relations of which it is responsible and this Convention shall thereupon apply to the countries or territories named in such notification after the expiration of the term of three months provided for in article IX. In the absence of such notification, this Convention shall not apply to any such country or territory.