Dr. Peter T. Coleman is Professor of Psychology and Education at Columbia University where he holds a joint-appointment at Teachers College and The Earth Institute. Dr. Coleman is Director of The Morton Deutsch International Center for Cooperation and Conflict Resolution (MD-ICCCR), and Co-Chair of AC4. He has conducted extensive research on optimality of motivational dynamics in conflict, power asymmetries and conflict, intractable conflict, multicultural conflict, justice and conflict, environmental conflict, mediation dynamics, and sustainable peace. He is author and editor of Psychological Components of Sustainable Peace (2013).