This is from a new The New Yorker article called The Cold Test::

The Bush Administration may have few good options with regard to Pakistan, given the country's role in the war on terror. Within two weeks of September 11th, Bush lifted the sanctions that had been imposed on Pakistan because of its nuclear-weapons activities. In the view of American disarmament experts, the sanctions had in any case failed to deal with one troubling issue: the close ties between some scientists working for the Pakistan Atomic Energy Commission and radical Islamic groups. "There is an awful lot of Al Qaeda sympathy within Pakistan's nuclear program," an intelligence official told me. One American nonproliferation expert said, "Right now, the most dangerous country in the world is Pakistan. If we're incinerated next week, it'll be because of H.E.U."—highly enriched uranium—"that was given to Al Qaeda by Pakistan."