"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] AGREEMENT OF ALLIANCE OF 1905. (Agreement of Alliance between Japan and Great Britain, 1905, Second Anglo-Japanese Alliance)

[Place] London
[Date] August 12, 1905
[Source] Joyakuisan, Dai 1 kan, Nihonkoku oyobi Kakkokukan Shojoyaku, pp.793-796.
[Full text]

Signed at London, in English, August 12, 1905 (38th year of Meiji).

Published September 27, 1905.


The Governments of Japan and Great Britain, being desirous of replacing the Agreement concluded between them on the 30th January, 1902, by fresh stipulations, have agreed upon the following Articles, which have for their object;

(a.) The consolidation and maintenance of the general peace in the regions of Eastern Asia and of India;

(b.) The preservation of the common interests of all Powers in China by insuring the independence and integrity of the Chinese Empire and the principle of equal opportunities for the commerce and industry of all nations in China;

(c.) The maintenance of the territorial rights of the High Contracting Parties in the regions of Eastern Asia and of India, and the defense of their special interests in the said regions:--


It is agreed that whenever, in the opinion of either Japan or Great Britain, any of the rights and interests referred to in the preamble of this Agreement are in jeopardy, the two Governments will communicate with one another fully and frankly, and will consider in common the measures which should be taken to safeguard those menaced rights or interests.


If by reason of unprovoked attack or aggressive action, wherever arising, on the part of any Power or Powers either Contracting Party should be involved in war in defence of its territorial rights or special interests mentioned in the preamble of this Agreement, the other Contracting Party will at once come to the assistance of its ally, and will conduct the war in common, and make peace in mutual agreement with it.


Japan possessing paramount political, military, and economic interests in Corea, Great Britain recognizes the right of Japan to take such measures of guidance, control, and protection in Corea as she may deem proper and necessary to safeguard and advance those interests, provided always that such measures are not contrary to the principle of equal opportunities for the commerce and industry of all nations.


Great Britain having a special interest in all that concerns the security of the Indian frontier, Japan recognizes her right to take such measures in the proximity of that frontier as she may find necessary for safeguarding her Indian possessions.


The High Contracting Parties agree that neither of them will, without consulting the other, enter into separate arrangements with another Power to the prejudice of the objects described in the preamble of this Agreement.


As regards the present war between Japan and Russia, Great Britain will continue to maintain strict neutrality unless some other Power or Powers should join in hostilities against Japan, in which case Great Britain will come to the assistance of Japan, and will conduct the war in common, and make peace in mutual agreement with Japan.


The conditions under which armed assistance shall be afforded by either Power to the other in the circumstances mentioned in the present Agreement, and the means by which such assistance is to be made available, will be arranged by the Naval and Military authorities of the Contracting Parties, who will from time to time consult one another fully and freely upon all questions of mutual interest.


The present Agreement shall, subject to the provisions of Article 6, comme{sic} into effect immediately after the date of its signature, and remain in force for ten years from that date.

In case neither of the High Contracting Parties should have notified twelve months before the expiration of the said ten years the intention of terminating it, it shall remain binding until the expirations of one year from the day on which either of the High Contracting Parties shall have denounced it. But if, when the date fixed for its expiration arrives, either ally is actually engaged in war, the alliances shall, ipso facto, continue until peace is concluded.

In faith whereof, the Undersigned, duly authorized by their respective Governments, have signed this Agreement and have affixed thereto their Seals.

Done in duplicate at London, the 12th day of August, 1905.


Envoy Extraordinary and Minister Plenipotentiary of His Majesty the Emperor of Japan at the Court of St. James.

[L.S.] (Signed) LANSDOWNE,

His Britannic Majesty’s Principle Secretary of State for Foreign Affairs.