Mary Ellen O'Connell is the Robert and Marion Short Professor of Law and is Research Professor of International Dispute Resolution—Kroc Institute, University of Notre Dame. O’Connell’s research is in the areas of international law on the use of force and international legal theory. She is the author or editor of numerous books and articles on these subjects, including, The Prohibition of the Use of Force, in RESEARCH HANDBOOK ON INTERNATIONAL CONFLICT AND SECURITY LAW, JUS AD BELLUM, JUS IN BELLO AND JUS POST BELLUM (N. D. White and C. Henderson eds., Edward Elgar 2013); Peace and War, in The HANDBOOK OF THE HISTORY OF INTERNATIONAL LAW, (B. Fassbender and A. Peters, eds. Oxford, 2012); Unlawful Killing with Combat Drones, A Case Study of Pakistan 2004-2009, in SHOOTING TO KILL: SOCIO-LEGAL PERSPECTIVES ON THE USE OF LETHAL FORCE (Simon Bronitt, et al. eds., Hart Publishing, 2012); Cyber Security Without Cyber War, 17 J. CONFLICT & SECURITY LAW, 187 (2012); WHAT IS WAR? AN INVESTIGATION IN THE WAKE OF 9/11 (Martinus Nijhof/Brill, 2012); and THE POWER AND PURPOSE OF INTERNATIONAL LAW, INSIGHTS FROM THE THEORY AND PRACTICE OF ENFORCEMENT (Oxford 2008, paperback 2011).