In the late nineteenth and early twentieth century international rela tions took on new and frightening aspects. A resurgent nationalism sharpened the conflicts between states, while an increasing industrial ism afforded them the means to make war on a scale previously unimaginable. Never before had there been greater need for art and skill in the conduct of international negotiations. The statesmen in charge of this intercourse often fell far short of the ideal necessary to eliminate the tensions in international relations. They not only had to deal with problems of great complexity, but...