Abu Ubaida al-Masri, one of Al Qaeda’s top operatives and the mastermind behind a plot to use liquid explosives to blow British passenger jets out of the sky, is dead, a U.S. official confirmed to FOX News Wednesday. The unidentified official said it is believed that al-Masri died of natural causes, possibly hepatitis, in Pakistan, and are staying away from a report that he was killed in a January CIA predator strike. Full Story