Part I. Setting the Scene - Theoretical Perspectives on International Law in the ICRC Study: 1. The methodological framework of the study Daniel Bethlehem; 2. The approach to customary international law in the study Iain Scobbie; 3. Other areas of customary law in relation to the study Françoise Hampson; Part II. Status of Conflict and Combatants - The ICRC Study: 4. Status of conflict Jelena Pejic; 5. Combatant status Anthony Rogers; Part III. Commentary on Selected Rules from the ICRC study: 6. Targeting Michael Schmitt; 7. Protected persons and objects Susan C. Breau; 8. Environment Karen Hulme; 9. Methods of warfare William J. Fenrick; 10. Weapons of warfare Steven Haines; 11. Fundamental guarantees Françoise Hampson; 12. Prisoner of war status Agnieszka Jachec-Neale; 13. Displacement and displaced persons Ryszard Piotrowicz; 14. Implementation and compliance David Turns; 15. War crimes Charles Garraway; Part IV. Conclusions: 16. Conclusions Elizabeth Wilmshurst.