An anti-government rebel sits with an anti-aircraft weapon in front an oil refinery, after the capture of the oil town of Ras Lanouf, eastern Libya, on March 5, 2011. Oil prices climbed to near $107 a barrel Monday as intense fighting between Libyan government forces and rebels appeared to be turning into a civil war and raised the prospect of a prolonged cut in crude exports from the OPEC nation. (AP Photo/Hussein Malla, File)
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