Enzo Cannizzaro – författare

This book offers a comprehensive analysis of the law of treaties as it emerges from the interplay between the 1969 Vienna Convention on the Law of Treaties and customary international law. It revisits the basic concepts underlying the provisions of the Vienna Convention, so as to determine the actual state of the law and its foreseeable development. In doing so, it examines some of the most controversial aspects of the law of treaties. The book first explores the influence exerted by the Vienna Convention on pre-existing customary law. Certain rules of the Convention which, at the time of its adoption, appeared to fall within the realm of progressive development, can now be regarded as customary international rules. Conversely, a number of provisions of the Convention, in particular those which have been the subject of subsequent codification work by the International Law Commission, have become obsolete. It then examines the impact exerted by the Vienna Convention on the development of other fields of international law, such as the law of international responsibility and the law of international organizations. The last section of the book is devoted to cross-cutting issues, with particular reference to the notion of jus cogens - a concept first used in the Vienna Convention in connection with the problem of the validity of treaties and which, afterwards, has acquired a legal significance going well beyond the Convention.Written by a team of renowned international lawyers, this book offers new insight into the basic concepts and methodology of the law of treaties and its problems.

Recent developments in both the EU and the global legal order call for a reassessment of the role of international law within the European Union. International Law as Law of the European Union explores how, and to what extent, international law still forms part of, and plays a role in, the current legal order of the European Union. Recent case law of the European Court of Justice prompted both scholars and practitioners to reconsider the relationship between EU law and international law. This volume reveals the practical development and consequences of this relationship, and places it in a conceptual framework by pointing to key arguments in the current debate.International Law as Law of the European Union thus forms an essential guide for academics, students and practitioners interested in the impact of new case law and conceptual thinking on the relationship between EU and international law.