New documents show al Qaeda 's desperate straits in Osama bin Laden 's final years . The U.S. government has been unable to find any evidence that the terror leader was involved with planning or carrying out a major attack on American soil since his capture by Pakistani forces nearly two months ago. Drone program took severe toll ; terror group unable to mount major operation .
New documents show al Qaeda 's desperate straits in Osama bin Laden 's final years . Peter Bergen : Drone program took severe toll ; terror group unable to mount major operation .