Andrew Preston is Professor of American History and a Fellow of Clare College at Cambridge University. He is the author of The War Council: McGeorge Bundy, the NSC, and Vietnam and Sword of the Spirit, Shield of Faith: Religion in American War and Diplomacy. Doug Rossinow is Associate Professor of History at the University of Oslo. He is the author of The Reagan Era: A History of the 1980s and The Politics of Authenticity: Liberalism, Christianity, and the New Left in America.