Andrew Clapham, Professor of International Law at the Graduate Institute of International and Development Studies, Geneva

Andrew Clapham is Professor of International Law at the Graduate Institute of International and Development Studies in Geneva, which he joined in 1997. He has been a member of the UN Commission on Human Rights in South Sudan since October 2017. He is an Honorary Member of the International Commission of Jurists. In 2003 he was an Adviser on International Humanitarian Law to Sergio Vieira de Mello, Special Representative of the UN Secretary-General in Iraq.

"The book offers a forensic account of what international law has to say about war, drawing on a detailed reading of national and international legal instruments and dozens of legal cases. Clapham provides a comprehensive survey of legal debates, innovations and progress in the regulation of war. He pays equal attention to the causes of war—examining war declarations, the outlawing of war, the place of force in the UN Charter and the question of war powers—and to the regulation of its conduct, including the protection of civilians and other persons, the triggering of the laws of armed conflict and the question of belligerent rights in naval operations." - Alex J. Bellamy, University of Queensland, International Affairs

"The book stands out as it comprehensively focalises on the legal dimension of war, whereas previous writings on war have covered its application in terms of policy instrument, rationalising planning and conduct of hostilities." - Atul Alexander and Sanyam Jha, Journal of Indian Law and Society

"Here is an oeuvre which is at one and the same time a law book (you could teach a course out of it) and a book about the law (it does so much more than simply outline the law of armed conflict both jus ad and jus in). It contextualizes it, historicizes it, makes it human in its inhumanity (wonderful chapter on victims) ... If you are new to the subject (hard to imagine among readers of EJIL and ICON...) you could not find a better introduction. If you are an old hand, you will both profit and enjoy, maybe with a tinge of jealousy." - J. H. H. Weiler, New York University School of Law, ICONnect