This study shows how, contrary to traditional thought, the U.S. government assumed a leadership position in world affairs and introduced innovative policies to ensure the maintenance of international peace between 1921 and 1933. During the Interwar Period, the Republican Party dominated American foreign policy under three successive presidents: Harding, Coolidge, and Hoover. The development of coherent strategies to preserve world peace and security engaged the energies of their three secretaries of state: Charles Evans Hughes, Frank Billings Kellogg, and Henry Lewis Stimson. Optimism for...