In this episode of the podcast, Sam Harris speaks with Fred Kaplan about the ever-present threat of nuclear war. They discuss the history of nuclear deterrence, U.S. first-strike policy, preventive war, limited nuclear war, tactical vs. strategic weapons, Trump’s beliefs about nuclear weapons, the details of command and control, and other topics. Fred Kaplan is the national-security columnist for Slate and the author of five previous books, Dark Territory: The Secret History of Cyber War, The Insurgents: David Petraeus and the Plot to Change the American Way of War (a Pulitzer Prize finalist and New York Times bestseller), 1959, Daydream Believers, and The Wizards of Armageddon. His latest book is The Bomb: Presidents, Generals, and the Secret History of Nuclear War. Website: http://www.fredkaplan.info/ Twitter: @fmkaplan