This is the official report of the International Law Commission to the General Assembly on its seventy-third session dated 18 April-3 June and 4 July-5 August 2022.

This book is a comprehensive study of secession from an international law perspective.

The year 2020 marks the 75th anniversary of the United Nations Organisation, and the 50th anniversary of the United Nations Friendly Relations Declaration, which states the fundamental principles of the international legal order. In commemoration, some of the world's most prominent international law scholars from all continents have come together to offer a comprehensive study of the fundamental principles of international law. Each chapter in this volume reflects decades of experience, work and reflection by the most authoritative voices of the field. At the same time, the book is an invitation to end narrow specialisation and re-engage with the wider body of rules and processes that lie at the foundations of the international legal order.

Designed for an undergraduate course in international law, the text may also supplement International Relations, Foreign Policy, International Affairs, World Politics, and Comparative Law courses. A mix of commentary, edited cases, and problems are included. Revisions include three new chapters: International Organizations (Ch. 3), Individuals and Corporations (Ch. 4), and International Environment (Ch. 12). Career Opportunities in International Law is the new Appendix 3. Exhibits graphically illustrating chapter concepts have been added as well as expanded coverage of Sources (Ch. 1), Dispute Resolutions (Ch. 9), and International Business (Ch. 3).