Libya's Foreign Minister Moussa Koussa holds a news conference in Tripoli in this March 18, 2011 file photo. Libyan Foreign Minister Moussa Koussa, one of Muammar Gaddafi's closest advisers and a former spy chief, defected and flew to Britain on Wednesday in protest at attacks by Gaddafi forces on civilians, a friend said. REUTERS/Zohra Bensemra (LIBYA - Tags: POLITICS CIVIL UNREST CONFLICT HEADSHOT)