Mara Hvistendahl, investigative reporter and author of "The Scientist and the Spy: A True Story of China, the FBI, and Industrial Espionage"; Dana Priest, The Washington Post investigative reporter and chair of public affairs journalism at the University of Maryland; and Tim Weiner, author of "The Folly and the Glory: America, Russia, and Political Warfare 1945-2000," examine key issues in intelligence and espionage with Tim Naftali, NYU professor of history and public service and CNN presidential historian.