Leading specialist on the Middle East and politics in the Muslim world. Currently, Dean, School of Advanced International Studies, Johns Hopkins University. Senior Advisor to U.S. President's Special representative for Afghanistan and Pakistan (2009-11). Senior Fellow, Brookings Institution (2011-16). Adjunct Senior Fellow, Council on Foreign Relations (2006-09). Author, The Shia Revival, Forces of Fortune and Dispensable Nation. Carnegie Scholar (2006).