1. Introduction: Policy Challenges to International Law, Security and Ethics in the Post-9/11 World Andy Mumford and Natasha Kuhrt Part 1: Framing the Issue 2. Terrorism, Security and International Law Nigel White 3. Al Qaeda and Networked International Insurgency Andy Mumford 4. Ethical and Legal Reasoning about War in a Time of Terror James Connelly and Don Carrick Part 2: International Law and Security 5. Law and War in the Global War on Terror Rachel Kerr and James Gow 6. Security, Discretion and International Law Aidan Hehir 7. The Human Security Agenda after 9/11: From Humanitarian Intervention to Peacebuilding Natasha Kuhrt Part 3: Self Defence 8. Principles of Pre-Emption: a Commentary on Issues and Scenarios for Self-Defence in the 21st Century James Gow 9. Who Killed the Right to Self-Defence? Thomas Jones 10. Computer Network Attacks, Self-Defence and International Law Elaine Korzak 11. Conclusion: War, Law and Ethics Aidan Hehir