What is the relationship between a State and its territory? How has the process of acquiring territory evolved? What happens in cases where an occupying force is involved? What about cases where a territory is being administered by an international body? This book examines the international legal principles relating to territory, and surveys the role of territory within the international political system. Shaw examines the long historical evolution of the international law of territory- from the concepts of discovery, control, conquest and succession, to colonial protectorates and the more modern processes of decolonization and the principle of self-determination. Once independent, the state is protected by the international legal principle of territorial integrity. The nature of this principle and the legal challenges to it are examined. This book also explores the legal principles in play in boundary disputes and the nature and role of boundary treaties. Finally, Shaw examines situations where a non-sovereign power exercises control over a territory, including cases of belligerent occupation and aspects of international territorial administration.