Customary International Law And Treaties

States often regard themselves bound by treaty rules which have developed under customary international law, even though many of the treaties themselves have not been ratified. The Law of the Sea Convention, for instance, has generated new customary rules which modified the 1958 Geneva Conventions. These & many other issues are dealt with clearly & systematically in this informative handbook on the relations between written & unwritten international law. The conclusions of the first edition of Customary International Law & Treaties were largely confirmed by the International Court of Justice in the Nicaragua Case. This fully revised second edition, while basing itself on the original version, brings the subject up to date.

"A study of their interactions and interrelations, with special consideration of the 1969 Vienna Convention on the Law of Treaties."--T.p.

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.

This new edition of Hugh Thirlway's authoritative text provides an introduction to one of the fundamental questions of the discipline: what is, and what is not, a source of international law. Traditionally, treaties between states and state practice were seen as the primary means with which to create international law. However, more recent developments have recognized customary international law, alongside international treaties and instruments, as a key foundation upon which international law is built. This book provides an insightful inquiry into all the recognized, or asserted, sources of international law. It investigates the impact of ethical principles on the creation of international law; whether 'soft law' norms come into being through the same sources as binding international law; and whether jus cogens norms, and those involving rights and obligations erga omnes have a unique place in the creation of international legal norms. It studies the notion of 'general principles of international law' within international law's sub-disciplines, and the evolving relationship between treaty-based law and customary international law. Re-examining the traditional model, it investigates the increasing role of international jurisprudence, and looks at the nature of international organisations and non-state actors as potential new sources of international law. This revised and updated book provides a perfect introduction to the law of sources, as well as innovative perspectives on new developments, making it essential reading for anyone studying or working in international law.

The book explores the various means of making non-conventional/non-treaty law and the cross-cutting issues that they raise. Law-making by technical/informal expert bodies, Conferences of Parties, international organizations, the UN Security Council, regional organizations and arrangements and non-state actors is examined in turn. This forms the basis for the analysis of the complementarity of international treaty law, customary international law and non-traditional law-making, potential subject matters of non-treaty law-making, domestic consequences of non-treaty law-making, proliferation of actors, commissions and treaty bodies of the UN system, and International courts and tribunals.