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Protocol for the Protection of Cultural Property in the Event of Armed Conflict. The Hague, 14 May 1954.
III - Para. 12.
12. Any High Contracting Party may, at the time of ratification 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 the present Protocol shall extend to all or any of the territories for whose international relations it is responsible. The said notification shall take effect three months after the date of its receipt.