Professor Emeritus and special adviser for policy studies at the Keough School of Global Affairs and Kroc Institute for International Peace Studies at the University of Notre Dame. Previous director of the Kroc Institute’s Peace Accords Matrix program. Editor of Peace Policy, an online journal published by the Kroc Institute. Chair of the Board of the Fourth Freedom Forum.

Author, co-author, editor or co-editor of 22 books, including Governance for Peace (Cambridge University Press, 2017); Gandhi and Beyond (Paradigm, 2009); Peace: A History of Movements and Ideas (Cambridge University Press, 2008); and Soldiers in Revolt: GI Resistance During the Vietnam War (Chicago: Haymarket Books, 2005).

Lifelong activist and advocate for peace, disarmament and nonviolent policy change. Organizer for peace as an active duty soldier during the Vietnam War. Executive Director of SANE, the Committee for a Sane Nuclear Policy (1977-88). Co-founder and board member of Win Without War. Co-initiator and member of numerous national and international peace and disarmament campaigns.