The threat of nuclear war seems to be rising once again as tension among global powers increases. With that in mind, we turn back to look at what the nuclear wars plans of the U.S. were during the early Cold War, and what a nuclear war might have looked like, and how it would have potentially been waged. We're joined by Sean Maloney, professor of history at the Royal Military College of Canada, author of Emergency War Plan: The American Doomsday Machine, 1945–1960, from Potomac Press.