The gap between the benchmark oil contracts diverged to its widest in nearly a month Tuesday as Brent prices continued to rise on uncertainty about Iraqi supply while U.S. prices retreated for a second straight session. Light, sweet crude for July delivery settled down 54 cents, or 0.5%, at $106.36 a barrel on the New York Mercantile Exchange. Brent crude on the ICE futures exchange rose 51 cents, or 0.5%, to $113.45 a barrel, the highest price since Sept. 9. The gap between the two contracts expanded to $7.09 a barrel, the largest price difference since May 27. So far, Iraqi oil exports, which mostly come from the country’s south, haven’t been halted. Iraq exports about 2.5 million barrels a day, and an outage would represent a large loss to global supplies. Iraqi government forces turned back Sunni militants […]