President Trump said he called off planned strikes on Iran on Thursday, claiming the framework for a deal had been approved by all parties and that a signing was only days away.
The outline would extend the ceasefire, reopen the Strait of Hormuz and start 60 days of nuclear talks.
Tehran was more guarded, with a Revolutionary Guards-linked agency saying no text had been agreed and officials citing no final decision.
Trump has predicted a deal more than thirty times. The U.S. naval blockade stays until any signing.