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AJDABIYAH, LYBIA - MARCH 31: (CHINA OUT,FRANCE OUT) Rebels fight at the front line on the road between Ajdabiyah and Brega as forces loyal to Muammar Gaddafi threatened to push them further away from strategic oil refineries on March 31, 2011 in eastern Libya. Libyan Rebels are continuing to fight Gaddafi's forces for control of Brega, a major oil producing city in the East of Libya.(Photo by XINHUA/Gamma-Rapho via Getty Images)

AJDABIYAH, LYBIA - MARCH 31: (CHINA OUT,FRANCE OUT)  Rebels fight at the front line on the road between Ajdabiyah and Brega as forces loyal to Muammar Gaddafi threatened to push them further away from strategic oil refineries on March 31, 2011 in eastern Libya. Libyan Rebels are continuing to fight Gaddafi's forces for control of Brega, a major oil producing city in the East of Libya.(Photo by XINHUA/Gamma-Rapho via Getty Images)