.... the United States has ramped up its surveillance of Pakistan’s nuclear arms, cites previously undisclosed concerns about biological and chemical sites there, and details efforts to assess the loyalties of counter­terrorism sources recruited by the CIA.

Pakistan appears at the top of charts listing critical U.S. intelligence gaps. It is named as a target of newly formed analytic cells. And fears about the security of its nuclear program are so pervasive that a budget section on containing the spread of illicit weapons divides the world into two categories: Pakistan and everybody else....