Feb 24 : Oil prices rose on Tuesday, nearing seven-month highs, with traders assessing risks to supply from any military escalation as another round of U.S.-Iran nuclear talks loomed. Brent crude futures rose 48 cents, or 0.7 per cent, to $71.97 a barrel by 0658 GMT, while U.S. crude futures climbed 45 cents, or 0.7 per cent, to $66.76 a barrel. Brent is trading at its highest since July 31, while WTI is at its firmest since August 1. "At this stage, geopolitics is clearly doing most of the