Libya’s crude output dropped after clashes forced two of the country’s biggest oil ports to shut down, threatening the OPEC member’s efforts to revive the production of its most important commodity. The North African country’s production fell to 650,000 barrels a day from about 700,000 barrels a few days ago, according to a person with knowledge of the matter, who asked not to be identified because the person isn’t authorized to speak to media. Crude shipments from Es Sider, the nation’s largest oil port, and Ras Lanuf, its third-biggest, have been suspended until security improves and workers return to the facilities, Jadalla Alaokali, a board member of Libya’s National Oil Corp., said by phone. Production from fields feeding the ports has declined and may be cut further if the two terminals remain shut and the situation doesn’t improve soon, he said. The Benghazi Defense Brigades, a militia not allied […]