Patrick Regan (Ph.D., University of Michigan, 1992) studies the role of external actors in managing armed conflict. His work involves evaluating how interventions shape conflict, paying particular attention to the interaction between military interventions and diplomatic mediation in civil wars. He also is interested in the conditions under which opposition protest movements have the potential to escalate to civil war and how external actors can influence that process.

Regan previously served on the faculties of Canterbury University (Christchurch, New Zealand) and Binghamton University (New York), where he directed the Center on Democratic Performance and wrote his most recent book, The Politics of Global Climate Change (Paradigm, 2015).

In August 2013, Regan was appointed coordinator of a new Kroc Institute initiative to build partnerships across Notre Dame's campus to address the multidisciplinary challenge of climate change.

Regan is the author of three books, Sixteen Million One: Understanding Civil War (Paradigm, 2010), Civil Wars and Foreign Powers (Michigan, 2000), and Organizing Societies for War (Praeger, 1994). Sixteen Million One was a finalist in the Grawemeyer Competition for Ideas that Improve World Order. He also has published a number of research articles in the Journal of Peace Research, Journal of Conflict Resolution, Journal of Politics, Conflict Management and Peace Science, and others.

Regan has been a Visiting Research Fellow at the Kroc Institute, a Fulbright research fellow at the Peace Research Institute of Oslo, Norway, and a visiting faculty member at Bogacizi University in Istanbul. He has served on the editorial boards of the International Studies Quarterly, Journal of Peace Research, Conflict Management and Peace Science, Civil Wars, and International Interactions. He serves on the advisory board of the International Studies Intensive Series of Paradigm Press and the advisory board of the Correlates of War Project. He is the President Elect of the Peace Science Society (International).