Article 11.
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This treaty shall be ratified and its provisions carried out by the parties in accordance with their respec- tive constitutional processes. The instruments of ratifica- tion shall be deposited as soon as possible with the United · States Government. It shall enter into force between the states which have ratified it as soon as the ratifications of the majority of the signatories, including Belgium, Canada, France, Luxembourg, The Netherlands, the United Kingdom and the United States have been deposited and shall come into effect with respect to other states on the date of the deposit of their ratifications.
After the treaty has been in force for ten years or at any time thereafter, the parties shall, if any of them so request, consult together for the purpose of reviewing this treaty, having regard for the factors then affecting peace and security in the North Atlantic area including the development of universal as well as regional arrangement s under the Charter of the United Nations for the maintenance of international peace and security.
After this treaty has been in force for twenty years any party may cease to be a party one year after its notice of denunciation has been given to the United States Government.
The United States Government shall inform the Governments of other parties of the deposit of each instrument of ratification and each notice of denunciation.
In witness whereof the undersigned plenipotentiaries have signed this treaty and affixed thereto their seals. Done at Washington this... ..day of March, 1949, in English and French, each text being equally authentic, the original of which shall be deposited in the archives of the United States Government and of which certified copies shall be transmitted by that Government to each of the other signatories.
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