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Convention (III) relative to the Opening of Hostilities. The Hague, 18 October 1907.
Non-signatory Powers may adhere to the present Convention.
The Power which wishes to adhere notifies in writing its intention to the Netherland Government, forwarding to it the act of adhesion, which shall be deposited in the archives of the said Government.
The said Government shall at once forward to all the other Powers a duly certified copy of the notification as well as of the act of adhesion, stating the date on which it received the notification.