New Delhi, April 21 -- US Vice President JD Vance is expected to depart for Islamabad by Tuesday (21 April, US Time) morning to resume negotiations with Iran over a potential deal to end the war, three US officials told Axios on Monday night (local time). The trip comes as the two-week ceasefire brokered by US President Donald Trump teeters on the edge of expiry - and as Tehran's own negotiators received a last-minute green light from Iran's supreme leader to attend the talks, according to Axios.

The diplomatic push comes at a moment of acute urgency. Trump announced the ceasefire on 7 April, and although the two-week window was set to close on Tuesday, he told reporters on Monday that the deadline had effectively been extended to "Wedne...