India, April 21 -- The deadline for the end of the US-Iran ceasefire is nearing, but the end of the war that began on February 28 is still nowhere in sight.

US President Donald Trump has been flipping back and forth across the negotiation spectrum, from threats to assurances. Iranian chief negotiator Mohammed Bagher Ghalibaf, however, has been adamant. He says Tehran won't talk with "a gun to our heads".

Earlier in the day, two regional officials said Washington and Tehran had signalled they would hold a second round of talks, with Vice President JD Vance leading the US team and Iranian parliament speaker Mohammad Bagher Qalibaf as its top negotiator.

Trump on Tuesday threatened to bomb Iran if they do not agree to a deal before the en...