The U.S. Treasury Department on Monday authorized sales of Iranian oil through Aug. 21 after productive talks, Treasury Secretary Scott Bessent said.

Iranian supertankers have switched on their transponders, after going dark during the war, as they depart the region loaded with oil.

Washington has granted Iran a 60-day waiver on oil sanctions, permitting the nation to produce, export, and sell its crude until August 21. This move, part of an interim deal to…