This innovative Research Handbook brings together leading international law scholars from around the world to discuss and highlight the contemporary debate regarding issues of conflict prevention and the legality of resorting to the use of armed force through to those arising during an armed conflict and in the phase between conflict and peace. The Handbook covers key conceptual topics drawn from across the three areas of jus ad bellum, jus in bello and jus post bellum. The subject matter of the included chapters range from conflict prevention through to reparation and compensation, via coverage of issues such as disarmament, the role of the Security Council, self-defence, humanitarian intervention and the responsibility to protect, targets, war crimes, private military contractors, peacekeeping, and the protection of human rights. Being the first to examine topics under these areas in one volume, the book will be of interest to scholars, academics, postgraduate and research students as well as government lawyers from various disciplinary backgrounds looking for a contemporary grounding in issues under the broad theme of international conflict and security law.