Tokyo, March 11, 1941.
Your Highness,
I have the honour to state that the Japanese Government, in view of the greatest importance which they attach to the maintenance of peace in Greater East Asia, have been watching with concern the development of the dispute to which Thailand, whose special relations with Japan have grown still closer as a result of the treaty of the 12th June, 1940, is a party against French Indo-China.
The Japanese Government, from the standpoint of the maintenance of peace in Greater East Asia and recalling the peaceful and friendly spirit which prompted the conclusion of the afore-mentioned treaty between Japan and Thailand, have offered their mediation to the Governments of Thailand and France with a view to bringing to an end the dispute between Thailand and French Indo-China. They, therefore, propose to the Government of Thailand their plan of mediation which is presented on separate sheet with confidence that it will be unconditionally accepted by the latter Government. The Japanese Government are prepared, upon its acceptance by the Thai Government, to guarantee to the Government of Thailand that the settlement of the said dispute through the mediation plan submitted by them will be definitive and irrevocable.
The Japanese Government, on the other hand, entertain no doubt that the Government of Thailand, on their part, will endeavour for the maintenance of peace in Greater East Asia and especially for the establishment of good neighbourly and amicable relations between Japan and Thailand, as well as for the promotion of closer economic relations between Japan and Thailand, and that they will declare to the Japanese Government that they will not enter into any agreement or understanding with a third Power or Powers envisaging political, economic or military co-operation aimed either directly or indirectly against Japan.
It is understood that the afore-mentioned guarantee by the Japanese Government and the declaration of the Thai Government shall by formal documents be confirmed simultaneously with the conclusion of a treaty for the settlement of the dispute between Thailand and France.
I avail myself of this opportunity to renew to Your Highness the assurance of my highest consideration.