WASHINGTON (AFP) - Americans who lost loved ones in the Lockerbie bombing slammed France as "utterly disgraceful," "meddling" and "ridiculous", after it threatened to block a compensation deal with Libya. Paris has threatened to veto the lifting of United Nations sanctions against Libya, mandated under a deal in which Tripoli agreed to pay 2.7 billion dollars to relatives of victims of the bombing. "I think it is ridiculous; it's blackmail," Glenn Johnson, whose daughter Beth Ann died in the disaster, said after a meeting with top US officials. Pan Am Flight 103 exploded over Lockerbie, Scotland on December 21, 1988,...