Some Republicans have criticised Tehran even as the US-Iran deal seems to inch closer.

Al Jazeera reports that Republican Senator Ron Johnson said in a video published by the Iran International outlet that a nuclear-armed Iran would pose an “existential threat” to the US.

Representative Don Bacon of Nebraska, meanwhile, shared an old video of former US president Jimmy Carter, who spoke about his hope for a lasting relationship with the Iranian government.

He wrote: “The [Iranian] regime absolutely hates us. When it comes to Iran’s regime, hope is not a strategy. They’ll only respond to power and resolve.”