US Vice President JD Vance has repeated Washington’s claim that Iran cannot possess a nuclear weapon, noting that preventing nuclear proliferation is “probably the single most important thing that we can do to keep our people safe for the long term”.

“I agree with the president that Iran should not have a nuclear weapon. We’re obviously engaged in a very aggressive and very engaged diplomatic process to try to ensure that that doesn’t happen, and the president has a lot of options,” he says while addressing an event.