27 July 1941
In retaliation for the steps taken by the British and United States by which our assets were frozen, the rules restricting foreign business transactions in Japan which are included in the rules governing foreign exchange, shall be put into effect on the 28th by order of the Finance Ministry. Manchukuo will also take similar steps while in China proclamations by the Consulates will be made subsequently. As an emergency measure, the above regulations will be announced by the Consulates as a bulletin and will be made effective for all practical purposes. (All transactions involving Britain and America will be placed on a license basis). At the same time, the Chinese will receive instructions to put similar measures in effect.
With regard to the Customs, all exports to countries which have frozen our assets, shall have to receive licenses in accordance with orders issued by the Financial Bureau. Guidance will be given to settle all complications which accompany the materialization of these regulations.
Ample study has been made so as to make these measures counter whatever measures the opposition should choose to actually take.
This message addressed to London and Washington.
JD-1:4111 (D)Navy Trans. 7-29-41 (S-TT)
(EXHIBITS OF JOINT COMMITTEE , EXHIBIT NO. 1 INTERCEPTED DIPLOMATIC MESSAGES SENT BY THE JAPANESE GOVERNMENT BETWEEN JULY l AND DECEMBER 8, 1941)