Oil retreats as U.S. temporarily permits purchases of Russian crude already at sea
Oil futures dipped in Asian trading after the U.S. Treasury issued a 30-day waiver allowing countries to buy Russian crude that was loaded onto tankers before March 12, a move intended to help stabilize global energy supplies amid the fallout from the war with Iran. The development came as Iran's new Supreme Leader, Mojtaba Khamenei, said Tehran wo…