Andrew Preston teaches American history at Cambridge University, where he is a fellow of Clare College and the editor of The Historical Journal. In addition to writing over thirty scholarly articles, he has written for the Globe and Mail, Maclean’s, TLS, the Boston Globe, ForeignAffairs.com, Politico, and History Today, and has appeared on national television and radio in the United States and Canada. Prior to coming to Cambridge, he taught at Yale University and at the University of Victoria in British Columbia. Preston is the author of The War Council: McGeorge Bundy, the NSC, and Vietnam (2006) and Sword of the Spirit, Shield of Faith: Religion in American War and Diplomacy (2012), which won the Charles Taylor Prize. He is a coeditor of three other books: Nixon in the World: U.S. Foreign Relations, 1969–1977 (2008), America in the World: A History in Documents from the War with Spain to the War on Terror (2014), and Faithful Republic: Religion and Politics in the Twentieth-Century United States (2015). He is currently editing the second volume of the forthcoming Cambridge History of the Vietnam War and writing a history of the idea of national security in the United States.