How close is Iran to obtaining a nuclear weapon? Kelsey Davenport, director for nonproliferation policy at the Arms Control Association, joins Joe Cirincione and Michelle Dover to debunk a few myths surrounding Iran and the bomb, and what 'breakout time' really means. Early Warning features our Roger L. Hale fellow Akshai Vikram and Andrey Baklitskiy of the Center for Strategic and International Studies discussing the future of US-Russia arms control and the role of nuclear weapons policy in the upcoming US presidential elections. Joe answers a question from Ariel in Maryland.