In an interview with FOX News Channel’s Special Report, Vance said the talks had seen movement in Washington’s direction.

“They moved in our direction,” he said, adding that Iranian negotiators appeared “unable to cut a deal” without approval from authorities in Tehran.

He said US negotiators had made clear that President Donald Trump would prefer Iran to be treated as a “normal country” with a functioning economy, though he did not elaborate on the details.

Vance said he believed there was still scope for a broader agreement but stressed that any further progress would depend on Tehran.

“There really is, I think, a grand deal to be had here. But it’s up to the Iranians, I think, to take the next step,” he said.

Responding to a question, Vance said the United States made a lot of progress ​in talks ​with Iran.

Vance, ​asked whether more ​talks were coming, said the ‌ball ⁠was in Iran’s court.

He added that the US expects Iran ​will ​make ⁠progress on opening the Strait ​of Hormuz, warning ​that ⁠the negotiation would change if Tehran does ⁠not.