Oil fell in New York as clashes between armed factions in Libya curbed crude output, while U.S. drilling increased. Futures slipped 0.2 percent. Libyan production dropped after clashes forced two of the country’s biggest oil ports to shut down, threatening the OPEC member’s efforts to revive production. In the U.S., producers added more rigs last week, extending a drilling surge into a 10th month, Baker Hughes Inc. said. Prices reached the day’s high after Iraq’s oil minister said OPEC will probably have to extend its output curbs for more than six months. Oil has fluctuated as investors assess whether U.S. output and inventory gains will hurt efforts by the Organization of Petroleum Exporting Countries and other nations to ease a glut. American production has risen to the highest in almost a year, while Saudi oil supply fell by 90,000 barrels a day in February from a month earlier. “If […]