A video that recently surfaced on Islamist militant Web sites shows a large group of al-Qaeda fighters — including the terrorist network’s second in command — taking part in a brazen open-air gathering, apparently unconcerned about the prospect of being struck by a U.S. drone.
U.S. officials said that the video appeared to be both recent and authentic and that analysts at the CIA and counterterrorism agencies are scrutinizing it for clues to potential plots. The officials declined to say why there had been no U.S. strike or whether U.S. spy agencies were even aware of the gathering before the video emerged.