A border official checks passports at the Ras Jdir border, between Libya and Tunisia, 175 km west of Tripoli December 15, 2014. Libya's recognised government conducted air strikes against rival government forces trying to seize major oil ports in the east and against targets in the west on Monday, witnesses said. An air strike targeted the town of Zuwara near the border to Tunisia, witnesses said. But the rival government kept control of the main crossing in Ras Jdir. Picture taken December 15, 2014. REUTERS/Ismail Zitouny (LIBYA - Tags: POLITICS CIVIL UNREST)