Introduction; Part I. The Historical and Social Context of International Territorial Administration: Introduction; 1. The concept of internationalisation; 2. The mandate system of the League of Nations; 3. The United Nations trusteeship system; 4. Post-war occupation; 5. UN territorial administration and the tradition of peace-maintenance; Conclusion - international territorial administration: an independent device with a certain normative heritage; Part II. The Practice of International Territorial Administration - A Retrospective: Introduction; 6. International territorial administration as a means of dispute settlement - the post-war experiments of the League of Nations and the United Nations; 7. From the post-war period to the end of the Cold War: the use of international territorial administration as an ad hoc device; 8. The systematisation of international governance; 9. The 'light footprint' and beyond; 10. A conceptualisation of the practice; Part III. The Foundations of International Territorial Administration: 11. The legality of international territorial administration; 12. The legitimacy of international territorial authority; Part IV. A Typology of Problems Arising Within the Context of International Territorial Administration: 13. The legal status of the administered territory; 14. The status of international administering authorities; 15. The exercise of regulatory authority within the framework of international administrations; 16. The relationship with domestic actors; Part V. International Territorial Administration at the Verge of the 21st Century - Achievements, Challenges and Lessons Learned: 17. Strong on concept, imperfect in practice: international territorial administration as a policy device; 18. International territorial administration and normative change in the international legal order.