Mary Ellen O’Connell is the Robert and Marion Short Professor of Law and Professor of International Peace Studies—Kroc Institute at the University of Notre Dame. Her work is in the areas of international law on the use of force, international dispute resolution, and international legal theory. She is the author or editor of numerous books, including, most recently, The Art of Law in the International Community (Cambridge University Press, May 2019; paperback 2020) and Self-Defence Against Non-State Actors (with Tams and Tladi, Cambridge University Press, July 2019). In 2020, Professor O’Connell was scheduled to be Distinguished Visiting Academic, University of St Andrews, Institute of Legal and Constitutional Research. In fall 2018, she was a visiting professor at the University of Chicago Law School and in the spring was a Fulbright Fellow at the Norwegian Nobel Institute in Oslo. In April 2018, she presented the Fifth Annual Justice Stephen Breyer International Law Lecture at the Brookings Institution, titled, Autonomous Weapons and International Law. From 2010-2012, she was a vice president of the American Society of International Law and from 2005 to 2010 chaired the International Law Association Committee on the Use of Force. Professor O’Connell served as a Title X professional military educator for the U.S. Department of Defense in Germany and was also an associate attorney in private practice with the international law firm of Covington & Burling in Washington, D.C. She holds an MSc from LSE, an LLB and PhD from Cambridge, and a JD from Columbia.