“Mr. Obama’s decision to raise the nuclear specter was notable because a succession of American officials have publicly stated recently that the Pakistani arsenal is secure. In private, however, they have commissioned new intelligence studies on how vulnerable Pakistani warheads and laboratories would be if insurgents made greater inroads, with one official saying recently, “It is the scenario we spend the most time thinking about.”

Between the Lines of the President’s Speech, an Expanded Campaign in Pakistan NYTimes