The U.S. has issued a sweeping rollback of sanctions on Iranian oil, allowing dollar-denominated trade for the first time in more than four decades, as Washington and Tehran press on with fragile talks toward a permanent peace deal. The U.S. Treasury on Monday issued a wide-ranging 60-day exemption allowing Iran to produce and sell crude oil, petrochemical and petroleum products in U.S. dollars through Aug. 21. Under the so-called General License X, vessels and entities previously subject to U.S. sanctions are also cleared for transactions. The waiver also theoretically reopens the door to U.S. imports of Iranian ... (full story)