Bomb targets U.S. mission in Libya's BenghaziA bomb exploded outside the U.S. diplomatic mission in the Libyan city of Benghazi overnight, an attack that could be retaliation for the killing, in a U.S. drone strike, of al Qaeda's Libyan second-in-command. An improvised explosive device was dropped from a vehicle outside the mission, in an upmarket area of central Benghazi. It exploded moments after, slightly damaging the building's gate but no one was hurt, U.S. and Libyan officials said.