Oil prices edged lower early Tuesday after rising overnight, following Monday's sharp sell-off, as investors continue to await further details on the U.S.-Iran agreement to bring the Middle East conflict to an end. Brent crude futures, the international price benchmark, were last seen almost 1% lower at $82.35 early on Tuesday morning. U.S. West Texas Intermediate futures for July delivery were down 0.83% at $80.08. Oil futures had ticked slightly higher overnight before reversing course,