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Convention relative to the Treatment of Prisoners of War. Geneva, 27 July 1929.
Part VIII : Execution of the convention #Section III : Final provisions - Art. 95.
Art. 95. A state of war shall give immediate effect to ratifications deposited-and to accessions notified by the belligerent Powers before or after the commencement of hostilities. The communication of ratifications or accessions received from Powers in a state of war shall be effected by the Swiss Federal Council by the quickest method.