Brian Glyn Williams is Professor of Islamic History at the University of Massachusetts, Dartmouth. He was employed by the CIA to track suicide bombers in Afghanistan in 2007. He is author of several books on warfare and terrorism, including Afghanistan Declassified, also available from the University of Pennsylvania Press, and The Last Warlord: The Life and Legend of Dostum, the Afghan Warrior Who Led US Special Forces to Topple the Taliban Regime.