Barnett Singer is associate professor of history at Brock University, Ontario, and the author of "Modern France": "Mind, Politics, Society" and "Village Notables in Nineteenth-Century France," John Langdon is professor of history at Le Moyne College. He is the author of "July 1914 "and coauthor, with Edward H. Judge, of" A Hard and Bitter Peace" and" The Cold War: A History through Documents,"