US Secretary of State Marco Rubio has said there has “been some progress” in the US-Iran negotiations, adding that there was need for “more work to be done”.

He reiterated that Trump’s priorities were that Iran can never have a nuclear weapon, the matter of highly enriched uranium and the issue of future enrichment.

“We’d all love to see an agreement with Iran and wish the straits are open and they abandon their nuclear ambitions and so forth,” he said.

He asserted that that is what the US “would continue to work on”, stressing the need for a “Plan B” if Iran refused to open the Strait of Hormuz.