A monument built outside Libyan leader Muammar Gaddafi's residence shows a fist clinching a US warplane on February 1, 2001 in Tripoli. U.S. fighters acting on the orders[ of then president Ronald Reagan carried out the bombings in 1986 in reprisal for the lethal bombing by alleged Libyan agents of a Berlin discotheque favoured by American troops. A daughter of Libyan leader Muammar Gaddafi was killed in one of the U.S. air strikes. ]