Environmental tragedies such as Chernobyl, the Exxon Valdez, and Bhopal remind us that catastrophic accidents are always possible in a modern world full of hazardous technologies. Yet, the safety record appears to be extraordinarily good with nuclear weapons, the most dangerous technology of all. This safety record has led scholars, policy-makers, and the public alike to believe that nuclear weapons can serve as a safe and secure deterrent into the...