The regional rivals have agreed to re-establish diplomatic ties in an agreement brokered by China that could reverberate across the Middle East and beyond.
The Biden administration has imposed new sanctions on Tehran and expressed support for protesters, as the Iranian government aids Russia in the Ukraine war and continues nuclear enrichment.
For a second day in a row, tens of thousands of demonstrators protested across Iran against the country’s authoritarian clerical rule. The government response on Thursday was again deadly.