Oil gained for a second day above $48 a barrel as the dollar retreated, boosting the appeal of commodities priced in the U.S. currency. Futures rose as much as 1.1 percent in New York after climbing 3.8 percent Friday. The Bloomberg Dollar Spot Index dropped for a fourth day after closing at the lowest level since June 9. Vladimir Putin is considering selling part of Russian oil producer Rosneft OJSC to China and India as the president struggles to meet spending commitments before his possible re-election bid in less than two years. Crude has advanced more than 80 percent from the lowest level in 12 years as disruptions from Nigeria to Canada and falling output in the U.S. trim a global glut. The U.K. entered the final week of campaigning ahead of its referendum on European Union membership that is being watched by governments and investors around the world […]