The assumption by the government of the United States of diplomatic relations with the government of the Union of Soviet Socialist Republics on November 16, 1933, closed a long and unique chapter in the annals of American diplomacy. Now that this phase has become historic and a new era in Soviet-American relations has been officially inaugurated, it is possible to review and appraise the highly contentious and illucid interval between 1917 and 1933 with some degree of accuracy and finality. The purpose of this discussion is, therefore, to examine the whole period candidly, objectively, dispassionately, by means of an analysis of the attitude of the United States government, as officially expressed in diplomatic documents or the utterances of responsible statesmen in the period since tsardom fell in Russia. It is desirable, however, to relate those statements, and the positions taken, to the historic attitudes of both Russia and the United States in the course of the last one hundred years; for it is only as the policy of the United States is seen in its full historic setting, in relation to the principles of international law long espoused and followed in American diplomatic practice, that the more recent phases of that policy can adequately be judged.