Pakistan's powerful army chief arrived in Tehran on Friday as diplomacy around the Middle East war gathered pace, with Iran weighing a new United States peace proposal while warning that deep divisions still stand in the way of a deal.Iran's foreign ministry spokesman Esmaeil Baqaei cautioned that the visit did not mean "we have reached a turning point or a decisive situation."
The disagreements between Iran and the US remained "deep and extensive", he added, according to Iran's ISNA news agency.
US Secretary of State Marco Rubio had earlier voiced hope of progress toward ending the war, which began on Feb. 28 with US-Israeli strikes on Iran.
An April 8 ceasefire halted open fighting, but negotiations, including historic face-to-face talks in Islamabad, have yet to produce a lasting agreement.
US President Donald Trump has described the stop-start negotiations as teetering on the "borderline" between a deal and renewed attacks.
