"The World and Japan" Database (Project Leader: TANAKA Akihiko)
Database of Japanese Politics and International Relations
National Graduate Institute for Policy Studies (GRIPS); Institute for Advanced Studies on Asia (IASA), The University of Tokyo

[Title] Security Treaty Between Japan and the United States of America

[Place] San Francisco
[Date] September 8, 1951
[Source] Joyakushu, 30-6. Japan's Foreign Relations-Basic Documents Vol.1, pp.444-448.
[Full text]

Japan has this day signed a Treaty of Peace with the Allied Powers. On the coming into force of that Treaty, Japan will not have the effective means to exercise its inherent right of self-defense because it has been disarmed.

There is danger to Japan in this situation because irresponsible militarism has not yet been driven from the world. Therefore Japan desires a Security Treaty with the United States of America to come into force simultaneously with the Treaty of Peace between Japan and the United States of America.

The Treaty of Peace recognizes that Japan as a sovereign nation has the right to enter into collective security arrangements, and further, the Charter of the United Nations recognizes that all nations possess an inherent right of individual and collective self-defense.

In exercise of these rights, Japan desires, as a provisional arrangement for its defense, that the United States of America should maintain armed forces of its own in and about Japan so as to deter armed attack upon Japan.

The United States of America, in the interest of peace and security, is presently willing to maintain certain of its armed forces in and about Japan, in the expectation, however, that Japan will itself increasingly assume responsibility for its own defense against direct and indirect aggression, always avoiding any armament which could be an offensive threat or serve other than to promote peace and security in accordance with the purposes and principles of the United Nations Charter.

Accordingly, the two countries have agreed as follows:


Japan grants, and the United States of America accepts, the right, upon the coming into force of the Treaty of Peace and of this Treaty, to dispose United States land, air and sea forces in and about Japan. Such forces may be utilized to contribute to the maintenance of international peace and security in the Far East and to the security of Japan against armed attack from without, including assistance given at the express request of the Japanese Government to put down large-scale internal riots and disturbances in Japan, caused through instigation or intervention by an outside power or powers.


During the exercise of the right referred to in Article I, Japan will not grant, without the prior consent of the United States of America, any bases or any rights, powers or authority whatsoever, in or relating to bases or the right of garrison or of maneuver, or transit of ground, air or naval forces to any third power.


The conditions which shall govern the disposition of armed forces of the United States of America in and about Japan shall be determined by administrative agreements between the two Governments.


This Treaty shall expire whenever in the opinion of the Governments of Japan and the United States of America there shall have come into force such United Nations arrangements or such alternative individual or collective security dispositions as will satisfactorily provide for the maintenance by the United Nations or otherwise of international peace and security in the Japan Area.


This Treaty shall be ratified by Japan and the United States of America and will come into force when instruments of ratification thereof have been exchanged by them at Washington.

IN WITNESS WHEREOF the undersigned Plenipotentiaries have signed this Treaty.

DONE in duplicate at the city of San Francisco, in the Japanese and English languages, this eighth day of September, 1951.


Shigeru Yoshida


Dean Acheson

John Foster Dulles

Alexander Wiley

Styles Bridges



Upon the coming into force of the Treaty of Peace signed today, Japan will assume obligations expressed in Article 2 of the Charter of the United Nations which requires the giving to the United Nations of "every assistance in any action it takes in accordance with the present Charter".

As we know, armed aggression has occurred in Korea, against which the United Nations and its members are taking action. There has been established a unified command of the United Nations under the United States pursuant to Security Council Resolution of July 7, 1950, and the General Assembly, by Resolution of February 1, 1951, has called upon all states and authorities to lend every assistance to the United Nations action and to refrain from giving any assistance to the aggressor. With the approval of SCAP, Japan has been and now is rendering important assistance to the United Nations action in the form of facilities and services made available to the members of the United Nations, the Armed Forces of which are participating in the United Nations action.

Since the future is unsettled and it may unhappily be that the occasion for facilities and services in Japan in support of United Nations action will continue or recur, I would appreciate confirmation, on behalf of your Government, that if and when the forces of a member or members of the United Nations are engaged in any United Nations action in the Far East after the Treaty of Peace comes into force, Japan will permit and facilitate the support in and about Japan, by the member or members, of the forces engaged in such United Nations action; the expenses involved in the use of Japanese facilities and services to be borne as at present or as otherwise mutually agreed between Japan and the United Nations member concerned. In so far as the United States is concerned the use of facilities and services, over and above those provided to the United States pursuant to the Administrative Agreement which will implement the Security Treaty between the United States and Japan, would be at United States expense, as at present.

Accept, Excellency, the assurances of my most distinguished consideration.


September 8, 1951.

His Excellency

Shigeru Yoshida,

Prime Minister of Japan.