Aaron Wolf is professor of geography and chair of the Department of Geosciences at Oregon State University. His research and teaching focus is on the interaction between water science and water policy, particularly as related to conflict prevention and resolution. He has acted as consultant to the US Department of State, the US Agency for International Development, the World Bank, and several governments on various aspects of transboundary water resources and dispute resolution. He is author of Hydropolitics Along the Jordan River: The Impact of Scarce Water Resources on the Arab-Israeli Conflict, (United Nations University Press, 1995), and a co-author of Core and Periphery: A Comprehensive Approach to Middle Eastern Water, (Oxford University Press, 1997), Transboundary Freshwater Dispute Resolution, (United Nations University Press, 2000), and Managing and Transforming Water Conflicts (Cambridge University Press, 2009). Wolf, a trained mediator/facilitator, directs the Program in Water Conflict Management and Transformation, through which he has offered workshops, facilitations, and mediation in basins throughout the world He coordinates the Transboundary Freshwater Dispute Database, an electronic compendium of case studies of water conflicts and conflict resolution, international treaties, national compacts, and indigenous methods of water dispute resolution (www.transboundarywaters.orst.edu), and is a co-director of the Universities Partnership on Transboundary Waters.