This book brings together world experts on the United Nations and international law, to examine not only the content of that legal regime but how it has been transformed since the second half of the twentieth century.

The rules of treaty interpretation codified in the 'Vienna Convention on the Law of Treaties' now apply to virtually all treaties, in an international context as well as within national legal systems, where treaties have an impact on a large and growing range of matters. The rules of treaty interpretation differ somewhat from typical rules for interpreting legal instruments and legislation within national legal systems. Lawyers, administrators, diplomats, and officials at international organisations are increasingly likely to encounter issues of treaty interpretation which require not only knowledge of the relevant rules of interpretation, but also how these rules have been, and are to be, applied in practice. Since the codified rules of treaty interpretation came into decree, there is a considerable body of case-law on their application. This case-law, combined with the history and analysis of the rules of treaty interpretation, provides a basis for understanding this most important task in the application of treaties internationally and within national systems of law. Any lawyer who ever has to consider international matters, and increasingly any lawyer whose work involves domestic legislation with any international connection, is at risk nowadays of encountering a treaty provision which requires interpretation, whether the treaty provision is explicitly in issue or is the source of the relevant domestic legislation. This fully updated new edition features case law from a broader range of jurisdictions, and an account of the work of the International Law Commission in its relation to interpretative declarations. This book provides a guide to interpreting treaties properly in accordance with the modern rules.

Aims to provide a useful analytical tool and practical guidance on good treaty practice. It will be of interest to those working with treaties and treaty procedures in governments, international organisations, and legal practice, as well as legal academics and students wishing to gain insight into the realities of treaty practice.

This guide is an authoritative reference point for anyone interested in the creation or interpretation of treaties and other forms of international agreement. It covers the rules and practices surrounding their making, interpretation, and operation, and uses hundreds of real examples to illustrate different approaches treaty-makers can take.

The 1969 Vienna Convention on the Law of Treaties makes no express reference to many of the most common canons and interpretative principles derived from international jurisprudence over many years. This volume represents the first modern, freestanding analysis of such canons and principles, their role in treaty interpretation and their relationship with the Vienna Convention regime. A top-flight roster of respected scholars and practitioners of public international law offers an in-depth examination of, among other things: • the origins of canons and interpretive principles; • their utility and limits in treaty interpretation; and • the application of numerous individual canons and interpretive principles, including effet utile, expressio unius, lex specialis, ejusdem generis, in dubio mitius, in pari materia, ex abundante cautela, the principles of contemporaneity and evolutive interpretation, and more. Extensive analysis of case law and scholarship provides insightful interpretive guidance across virtually every subfield of public international law. With its valuable insights into when the application of particular canons or principles of interpretation is most likely to be appropriate and persuasive, the volume will be of great value to lawyers representing parties (whether states, corporations or individuals) before international dispute resolution bodies, as well as to judges and arbitrators, legal officials at ministries of foreign affairs, and scholars of public international law.

This Oxford Handbook ambitiously seeks to lay the groundwork for the relatively new field of comparative foreign relations law. Comparative foreign relations law compares and contrasts how nations, and also supranational entities (for example, the European Union), structure their decisions about matters such as entering into and exiting from international agreements, engaging with international institutions, and using military force, as well as how they incorporate treaties and customary international law into their domestic legal systems. The legal materials that make up a nation's foreign relations law can include constitutional law, statutory law, administrative law, and judicial precedent, among other areas. This book consists of 46 chapters, written by leading authors from around the world. Some of the chapters are empirically focused, others are theoretical, and still others contain in-depth case studies. In addition to being an invaluable resource for scholars working in this area, the book should be of interest to a wide range of lawyers, judges, and law students. Foreign relations law issues are addressed regularly by lawyers working in foreign ministries, and globalization has meant that domestic judges, too, are increasingly confronted by them. In addition, private lawyers who work on matters that extend beyond their home countries often are required to navigate issues of foreign relations law. An increasing number of law school courses in comparative foreign relations law are also now being developed, making this volume an important resource for students as well. Comparative foreign relations law is a newly emerging field of study and teaching, and this volume is likely to become a key reference work as the field continues to develop.