The source also said that CIA personnel from around the world were being pulled into the Afghan-Pakistan border area, an intelligence-community "surge" to go after bin Laden and other al-Qaida figures.

NPR: Bush Puts New Focus On Bin Laden, Al-Qaida

Although U.S. officials have warned of possible reprisal attacks by bin Laden supporters, there has been no surge of attacks inside Afghanistan, the commander of NATO forces in eastern Afghanistan said Tuesday.

CNN: U.S. granted access to speak to bin Laden's wives

Since bin Laden's death, counterterrorism officials monitoring jihadi websites and Internet chat rooms have seen a surge in threats leveled against the West.

WSJ: Spies Piece Together al Qaeda Playbook