This is the first comprehensive treatment of international law and policy on the protection of civilians in armed conflict. In addition to international humanitarian and human rights law, jus ad bellum, disarmament law, and international criminal law are all critical to civilian protection. The book offers in-depth analysis and explanation of the normative framework while also outlining and discussing the policies of concerned States and international and humanitarian organisations. The role of the United Nations as a key actor is considered along with regional organisations such as the African Union, the European Union, and NATO. Particular attention is given to those at direct risk of harm during armed conflict, including children, women, persons with disabilities, and LGBTI persons.