Diplomacy at the Highest Level provides the first comprehensive analysis of the theory and practice of international summitry. The implications of the increased involvement of political leaders in international diplomacy is analyzed through case-studies of specific meetings and types of summit representing a broad historical, geographic and political spectrum. The volume also explains the development of high-level meetings from pre-modern times until the present day, the increase in summitry in the twentieth century and the advantages and disadvantages of summits for international politics and diplomacy.