U.S. oil prices climbed Thursday, snapping a five-session losing streak, as expectations of higher Iranian crude-oil exports receded. Nuclear talks between Iran and six world powers are appear likely to drag on past Thursday’s midnight deadline. If a deal isn’t complete by Friday morning, Congress will get an extra month to review the deal. The prospect of a final deal has weighed on oil prices in recent months. If a deal is reached, sanctions currently limiting Iran’s oil exports would eventually be lifted, allowing the nation to sell more oil to the already-oversupplied global market. Light, sweet crude for August delivery settled up $1.13, or 2.2%, at $52.78 a barrel on the New York Mercantile Exchange. Brent, the global benchmark, rose $1.56, or 2.7%, to $58.61 a barrel on ICE Futures Europe. Oil prices fell sharply earlier this week amid concerns about gyrations in the Chinese stock markets […]