TRIPOLI - Libya's parliament has ordered the formation of a military force to end the occupation of oil ports by rebels, a spokesman said on Monday, after a North Korean-flagged tanker had loaded crude at one of the rebel-held ports. 'The military operation to fulfil this task will start within one week,' according to a decree by the president of the General National Assembly (GNC) parliament, which was confirmed to Reuters by GNC spokesman Omar Hmeidan.