Self-determination is a cornerstone of modern international law-an inalienable right that empowers peoples to freely determine their political status and pursue their economic, social, and cultural development. Enshrined in Article 1 of the United Nations Charter and Article 1 common to both the International Covenant on Civil and Political Rights and the International Covenant on Economic, Social and Cultural Rights, self-determination stands internationally as a right to independence and domestically as a foundation for representative government. This book offers a clear, objective, and comprehensive account of the right to self-determination in international law. Designed for both scholars and practitioners, it navigates the complex legal landscape with precision, drawing on treaties, state practice, UN resolutions, and landmark judgments of the International Court of Justice. It explores the historical roots, normative status, and dual dimensions-international and domestic-of the right, while also addressing the obligations of states and mechanisms for enforcement. By illuminating the legal content, tensions, and practical applications of self-determination, this volume provides readers with the tools to understand and apply one of the most fundamental principles shaping our world today. It is as an essential resource for those engaged in international law, human rights, and global governance.