Alexander Orakhelashvili (LLM Leiden, PhD Cantab.) is a Lecturer in Law at the University of Birmingham. He previously taught international law in the Universities of London, Oxford, and Cambridge. His research includes all areas of international law. He has previously published Peremptory Norms in International Law (OUP, 2006) and The Interpretation of Acts and Rules in Public International Law (OUP, 2008) and a wide range of articles in the leading international law journals and yearbooks.

The book is provocative and thoughtprovoking yet the most comprehensive of any in its coverage. The distinctive and original approach adopted by Orakhelashvili will be sure to make it the leading text in the field. The book is also both academic yet instructive in nature thereby opening it up to a broad readership to include not only academics, researchers and students but also practitioners and civil servants.

• Introduction ; 1. The Essence of Collective Security ; 2. Historical Evolution ; 3. Collective Security Institutions ; 4. The Regime of Competence Allocation ; 5. The Identification of Threats ; 6. Responses to Threats ; 7. Collective Security and Self-Defence ; 8. Peace Operations ; 9. Legal Consequences of Illegal Collective Security Decisions ; Conclusions

Alexander Orakhelashvili (LLM Leiden, PhD Cantab.) is a Lecturer in Law at the University of Birmingham. He previously taught international law in the Universities of London, Oxford, and Cambridge. His research includes all areas of international law. He has previously published Peremptory Norms in International Law (OUP, 2006) and The Interpretation of Acts and Rules in Public International Law (OUP, 2008) and a wide range of articles in the leading international law journals and yearbooks.

The book is provocative and thoughtprovoking yet the most comprehensive of any in its coverage. The distinctive and original approach adopted by Orakhelashvili will be sure to make it the leading text in the field. The book is also both academic yet instructive in nature thereby opening it up to a broad readership to include not only academics, researchers and students but also practitioners and civil servants.

• Introduction ; 1. The Essence of Collective Security ; 2. Historical Evolution ; 3. Collective Security Institutions ; 4. The Regime of Competence Allocation ; 5. The Identification of Threats ; 6. Responses to Threats ; 7. Collective Security and Self-Defence ; 8. Peace Operations ; 9. Legal Consequences of Illegal Collective Security Decisions ; Conclusions

Alexander Orakhelashvili (LLM Leiden, PhD Cantab.) is a Lecturer in Law at the University of Birmingham. He previously taught international law in the Universities of London, Oxford, and Cambridge. His research includes all areas of international law. He has previously published Peremptory Norms in International Law (OUP, 2006) and The Interpretation of Acts and Rules in Public International Law (OUP, 2008) and a wide range of articles in the leading international law journals and yearbooks.

The book is provocative and thoughtprovoking yet the most comprehensive of any in its coverage. The distinctive and original approach adopted by Orakhelashvili will be sure to make it the leading text in the field. The book is also both academic yet instructive in nature thereby opening it up to a broad readership to include not only academics, researchers and students but also practitioners and civil servants.

• Introduction ; 1. The Essence of Collective Security ; 2. Historical Evolution ; 3. Collective Security Institutions ; 4. The Regime of Competence Allocation ; 5. The Identification of Threats ; 6. Responses to Threats ; 7. Collective Security and Self-Defence ; 8. Peace Operations ; 9. Legal Consequences of Illegal Collective Security Decisions ; Conclusions