On October 22, 1962, American families gathered around their televisions for an address by President Kennedy. What they heard shocked them. In this episode of KennanX, Jill Dougherty revisits the Cuban Missile Crisis, uncovering lessons learned - and forgotten - with Serhii Plokhii, Director of the Ukrainian Research Institute at Harvard University and author of the new book, Nuclear Folly: A History of the Cuban Missile Crisis.