Pakistan has been a nuclear power for two decades, and has an estimated eighty to a hundred warheads, scattered in facilities around the country. The success of the latest attacks raised an obvious question: Are the bombs safe? Asked this question the day after the Rawalpindi raid, Secretary of State Hillary Clinton said, “We have confidence in the Pakistani government and the military’s control over nuclear weapons.” Clinton—whose own visit to Pakistan, two weeks later, would be disrupted by more terrorist bombs—added that, despite the attacks by the Taliban, “we see no evidence that they are going to take over the state.” Clinton’s words sounded reassuring, and several current and former officials also said in interviews that the Pakistan Army was in full control of the nuclear arsenal. But the Taliban overrunning Islamabad is not the only, or even the greatest, concern. The principal fear is mutiny—that extremists inside the Pakistani military might stage a coup, take control of some nuclear assets, or even divert a warhead.