But when America severed diplomatic relations with Germany, the situation for China was changed. America was not bound to subservience to Japan, as we were; America was not one of the Allies; and America had always been China’s best friend. Accordingly, the Chinese were willing to take the advice of America, and proceeded to sever diplomatic relations with Germany in March 1917. Dr. Reinsch was careful to make no promises to the Chinese, but of course he held out hopes. The American Government, at that time, could honestly hold out hopes, because it was ignorant of the secret treaties and agreements by which the Allies were bound. The Allies, however, can offer no such excuse for having urged China to take the further step of declaring war. Russia, France, and Great Britain had all sold China’s rights to secure the continued support of Japan.
In May 1916, the Japanese represented to the Russians that Germany was inviting Japan to make a separate peace. In July 1916, Russia and Japan concluded a secret treaty, subsequently published by the Bolsheviks. This treaty constituted a separate alliance, binding each to come to the assistance of the other in any war, and recognizing that “the vital interests of one and the other of them require the safeguarding of China from the political domination of any third Power whatsoever, having hostile designs against Russia or Japan.” The last article provided that “the present agreement must remain profoundly secret except to both of the High Contracting Parties."[72] That is to say, the treaty was not communicated to the other Allies, or even to Great Britain, in spite of Article 3 of the Anglo-Japanese Alliance, which provides that “The High Contracting Parties agree that neither of them will, without consulting the other, enter into a separate agreement with another Power to the prejudice of the objects described in the preamble of this Agreement,” one of which objects was the preservation of equal opportunity for all Powers in China and of the independence and integrity of the Chinese Empire.
On February 16, 1917, at the very time when America was urging China to sever diplomatic relations with Germany, we concluded an agreement with Japan containing the following words:—