Trump’s social media post made no mention of Iran’s nuclear program and highly enriched uranium, which Tehran has sought to negotiate over later, but came amid growing optimism among officials over a potential deal to end the war.

Earlier on Saturday, a regional official with direct knowledge of the Pakistan-led mediation efforts said the US and Iran were closing in on an agreement.

The official, speaking on condition of anonymity to discuss the closed-door deliberations, also told the Associated Press that “last-minute disputes” could blow up the efforts.

This is not the first time in recent weeks that a deal has been described as close.

The official said the deal would include an official declaration of the end of the war, with two-month negotiations on Iran’s nuclear program. The strait of Hormuz would be reopened and the US would end its blockade of Iran’s ports .

Iran, meanwhile, had signalled “narrowing differences” in negotiations after Pakistani army chief Asim Munir held more talks in Tehran.