The US vice-president, JD Vance, has blamed the failure of marathon negotiations with Iran on the country’s refusal to abandon its nuclear weapons programme, while Iranian delegates have claimed Washington needs to do more to win their trust.
Vance, who left Islamabad on Sunday morning after 21 hours of talks with Iranian officials in the Pakistani capital, said his team had been very clear on its red lines, as hopes faded of a quick end to the conflict that began on 28 February.
