Firefighters work to put out the fire of a storage oil tank at the port of Es Sider in Ras Lanuf December 29, 2014. Oil tanks at Es Sider have been on fire for days after a rocket hit one of them, destroying more than two days of Libyan production, officials said on Sunday. Libya has appealed to Italy, Germany and the United States to send firefighters. REUTERS/Stringer (LIBYA – Tags: CIVIL UNREST POLITICS CONFLICT ENERGY) BEST QUALITY AVAILABLE – RTR4KH9B