This book explores the path that led to the Treaty of Rapallo (1920) between Italy and the new Kingdom of the Serbs, Croats and Slovenes, later the Kingdom of Yugoslavia, in the aftermath of the First World War, when the territories of the former Austro-Hungarian Empire were allotted to new and existing states, with regard as far as possible to the nationalities of the people living in the various territories in addition to the future of Montenegro and Albania. Based on vast archival documentation and published sources, the contributors to this book discuss the nature of the disputes which arose in the Adriatic area, often as the result of the inhabitants of the different territories being of several nationalities, and examine how the disputes were concluded. It charts the disappointments of both Italians and Yugoslavs, the Italians disappointed that the terms of the 1915 Treaty of London which promised Dalmatia to Italy in return for Italy entering the war against the Austro-Hungarian Empire were not fulfilled, the Yugoslavs disappointed at the loss of territories which contained large Yugoslav populations. It considers public opinion, the words, positions and actions of leading politicians, and the continuing consequences of the settlement, many of them adverse consequences for particular cities and localities. Presenting a comprehensive approach to the Adriatic controversy, this book will be of interest to those studying European history of international relations, diplomatic negotiations and nationalism, modern history, Central Asian, Eastern European and Russian Studies.