The ICJ Opinion on Kosovo was much awaited both in politics and in academic literature as it was expected to contain not only a decisive verdict on a long-lasting controversy on the Balkans but also a ground-breaking stock-taking on many pivotal questions of international law. The Opinion handed down by the ICJ on 22 July 2010 immediately gave rise to intense discussions that made broad reference to issues such as self-determination, secession, state sovereignty, state recognition and the constitutionalization of the international law order. Based on one of the first major international conferences on this subject, this book contains contributions by the international law experts who gathered at the University of Innsbruck (Austria) to discuss this subject.