The growing significance of international history and relations in recent years has been reflected in a growth of research and development of new courses. This collection of essays focus on three broad themes: the League of Nations and collective security, problems in British foreign policy, and European/International security in the interwar years. The book, in memory of Esmonde Robertson and George Grün, distinguished historians of the London School of Economics, contains papers commissioned from some of the most formidable names in international history.