Al Qaeda Chiefs Are Seen to Regain Power

Senior leaders of Al Qaeda operating from Pakistan have re-established significant control over their once battered worldwide terror network and over the past year have set up a band of training camps in the tribal regions near the Afghan border, according to American intelligence and counterterrorism officials.

American officials said there was mounting evidence that Osama bin Laden and his deputy, Ayman al-Zawahri, had been steadily building an operations hub in Pakistan.