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Protocol for the Protection of Cultural Property in the Event of Armed Conflict. The Hague, 14 May 1954.
III - Para. 11.
11. (a) Each State Party to the Protocol on the date of its entry into force shall take all necessary measures to ensure its effective application within a period of six months after such entry into force.
(b) This period shall be six months from the date of deposit of the instruments of ratification or accession for any State which deposits its instrument of ratification or accession after the date of the entry into force of the Protocol.