Papers prepared as a result of research conducted at the 1969 session of the Center for Studies and Research, Hague Academy of International Law.

The Commentary on the Vienna Convention on the Law of Treaties provides an in-depth article-by-article analysis of all of the Vienna Convention’s provisions. Each provision’s analysis consists of (I) Purpose and Function of the Article, (II) Historical Background with Negotiating History, (III) Elements of the Article and finally (IV) Treaties of International Organizations. In short, the present Commentary contains a comprehensive legal analysis of all aspects of the international law of treaties. Furthermore, where the law of treaties reaches into other fields of international law, e.g. the law of state responsibility, the relevant interfaces are discussed and contextualized. With its focus on international practice, the Commentary is an invaluable reference for both academia and practitioners of international law.

This book offers a comprehensive analysis of the law of treaties based on the interplay between the 1969 Vienna Convention on the Law of Treaties and customary international law. Written by a team of renowned international lawyers, it offers new insight into the basic concepts and methodology of the law of treaties and its problems.

Treaties form a basis for the daily conduct of international relations, and thus it is vital to see how they are made, amended, interpreted, and enforced. This volume presents insights into how the law of treaties has worked over the past 40 years, since the 1969 Vienna Convention was adopted as the comprehensive treaty to regulate the law of international agreements. The book capitalizes on 40 years of international experience, with a group of expert contributors describing and analyzing the subject. Multiple issues of the Convention are covered, including the aspects of conclusion, interpretation, reservation, amendment and modification, validity, and other issues.

The 1969 and 1986 Vienna Conventions on the Law of Treaties are essential components of the international legal order. This is the first Commentary on their provisions, containing thorough and well-structured analyses of each of their Articles. It draws on preparatory works and practice and is written by a large collection of experts from the field