The Parties to this Treaty reaffirm their faith in the purposes and principles of the Charter of the United Nations and their desire to live in peace with all peoples and all governments. They are determined to safeguard the freedom, common heritage and civilisation of their peoples, founded on the principles of democracy, individual liberty and the rule of law. They seek to promote stability and well-being in the North Atlantic area. They are resolved to unite their efforts for collective defence and for the preservation of peace and security. They therefore agree to this North Atlantic Treaty
[The North Atlantic Treaty-Washington D.C. – 4 April 1949]
Date – 22 Oct. 1951
The Parties to the North Atlantic Treaty, signed at Washington on April 4, 1949
Being satisfied that the security of the North Atlantic area will be enhanced by the accession of the Kingdom of Greece and the Republic of Turkey to that Treaty,
Agree as follows:
Article 1
Upon the entry into force of this Protocol, the Government of the United States of America shall, on behalf of all the Parties, communicate to the Government of the Kingdom of Greece and the Government of the Republic of Turkey an invitation to accede to the North Atlantic Treaty, as it may be modified by Article 2 of the present Protocol. Thereafter the Kingdom of Greece and the Republic of Turkey shall each become a Party on the date when it deposits its instruments of accession with the Government of the United States of America in accordance with Article 10 of the Treaty.
Article 2
If the Republic of Turkey becomes a Party to the North Atlantic Treaty, Article 6 of the Treaty shall, as from the date of the deposit by the Government of the Republic of Turkey of its instruments of accession with the Government of the United States of America, be modified to read as follows:
For the purpose of Article 5, an armed attack on one or more of the Parties is deemed to include an armed attack:
on the territory of any of the Parties in Europe or North America, on the Algerian Departments of France, on the territory of Turkey or on the islands under the jurisdiction of any of the Parties in the North Atlantic area north of the Tropic of Cancer;
on the forces, vessels, or aircraft of any of the Parties, when in or over these territories or any other area in Europe in whicH occupation forces of any of the Parties were stationed on the date when the Treaty entered into force or the Mediterranean Sea or the North Atlantic area north of the Tropic of Cancer.
Article 3
The present Protocol shall enter into force when each of the Parties to the North Atlantic Treaty has notified the Government of the United States of America of its acceptance thereof. The Government of the United States of America shall inform all the Parties to the North Atlantic Treaty of the date of the receipt of each such notification and of the date of the entry into force of the present Protocol.
Article 4
The present Protocol, of which the English and French texts are equally authentic, shall be deposited in the Archives of the Government of the United States of America. Duly certified copies thereof shall be transmitted by that Government to the Governments of all the Parties to the North Atlantic Treaty.