This book is the first volume in a trilogy that traces the development of the academic subject of International Relations, or what was often referred to in the interwar years as International Studies. This first volume takes on the origins of International Relations, beginning with the League of Nations and the International Studies Conference in Berlin in 1928 and tracing its development through the Paris Peace Conference, the quest for cooperation in the Pacific, the Institute of Pacific Relations and lessons from Copenhagen, Shanghai and Manchuria. This project is an impressive and exhaustive consideration of the evolution of IR and is aptly published in celebration of the discipline's centenary.