The editors of the Oxford Handbook of International Law in Armed Conflict state that they have deliberately chosen to emphasise ‘international law in armed conflict rather than the humanitarian law of armed conflict’. Reflecting this statement, the subject matter of the Handbook is not limited to international humanitarian law but encompasses other rules of international law that may be applicable in armed conflict, including human rights law, refugee law, international criminal law and environmental law. Across 32 chapters, the contributors examine multiple aspects of international law in armed conflict and, to a lesser extent, the relationship between international humanitarian law and other applicable rules of international law. The Handbook is not, and does not set out to be, a comprehensive treatise on international humanitarian law. It is better described as a collection of focused essays, each dealing with a particular aspect of international law in armed conflict. Adopting varying theoretical...