RAS LANUF, LIBYA - MARCH 11: Libyan rebels battle government troops as smoke from a damaged oil facility darkens the frontline sky on March 11, 2011 in Ras Lanuf, Libya. Government troops loyal to Libyan leader Muammar Gaddafi drove opposition forces out of the strategic oil town, forcing a frantic rebel retreat through the desert. (Photo by John Moore/Getty Images)
