The first phase of the dispute between China and Japan before the League of Nations began in September, 1931, when China, following upon the invasion of Manchuria by Japanese troops, invoked Article 11 of the Covenant and asked the Council to take measures to restore the territorial status quo and to determine the amount and the character of the compensation due to her as the result of the invasion of her territory. It ended in April, 1933, when, subsequently to the adoption by the Assembly of a report under Article 15 of the Covenant, it became clear that no effective action would be taken to implement the purposes of the Covenant. The charter of the community of nations organized in and through the League proved, to all appearances, to be of illusory value in its fundamental aspect, namely, in the undertaking to protect the members of the League from external violence and aggression. The prediction of the sceptics that the authority of the League would be unable to assert itself if challenged by one of the Great Powers seemed to have been amply confirmed. It seemed to have been fulfilled by a successful defiance of the Covenant so unprecedented in its magnitude, obviousness and persistence as to constitute a fair test case of the value and of the potentialities of the League.