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a). This Agreement shall be open for signature by the Parties to the North Atlantic Treaty and shall be subject to ratification, acceptance or approval. The instruments of ratification, acceptance or approval shall be deposited with the Government of the United States of America;
b). This Agreement shall enter into force thirty days after the date of deposit by two signatory States of their instruments of ratification, acceptance or approval. It shall enter into force for each other signatory State thirty days after the deposit of its instrument of ratification, acceptance or approval.
c). This Agreement shall with respect to the Parties for which it entered into force supersede the “Security Agreement by the Parties to the North Atlantic Treaty Organization” approved by the North Atlantic Council in Annex A (paragraph 1) to Appendix to Enclosure to D.C. 2/7, on 19th April, 1952, and subsequently incorporated in Enclosure “A” (paragraph 1) to C-M(55)15(Final), approved by the North Atlantic Council on 2nd March, 1955.