What has gone wrong? Very little has gone right for Libya since Oct. 20, 2011, when longtime dictator Col. Moammar Gadhafi was dragged from a drainage pipe outside the city of Sirte, beaten with shoes and sticks, and shot in the head by militiamen. A NATO-led coalition had helped the rebels topple Gadhafi's much-hated regime with a punishing bombing campaign, in the hope that his fall would precipitate a new era of democracy and prosperity in the oil-rich North African nation.