The United States and Iran received the framework of a plan to end hostilities, but Iran rejected immediately reopening the Strait of Hormuz, after President Donald Trump threatened to rain "hell" on Tehran if it did not make a deal the end of Tuesday.
The peace plan involves a two-tier approach with an immediate ceasefire followed by a comprehensive agreement to be finalised within 15-20 days, a source aware of the proposals said on Monday.
Pakistan's army chief, Field Marshal Asim Munir, has been in contact "all night long" with U.S. Vice President JD Vance, special envoy Steve Witkoff and Iranian Foreign Minister Abbas Araqchi, the source said.
Iran won't reopen the Strait as part of a temporary ceasefire, a senior Iranian official told Reuters on Monday, adding that Iran won't accept deadlines as it reviews the proposal. Washington lacks the readiness for a permanent ceasefire, the official said.
Axios first reported on Sunday that the U.S., Iran and regional mediators were discussing a potential 45-day ceasefire as part of a two-phase deal that could lead to a permanent end to the war, citing U.S., Israeli and regional sources.
Anwar Gargash, an adviser to the UAE president, said any settlement must guarantee access through the Strait of Hormuz.
He warned that a deal that failed to rein in Iran’s nuclear programme and its missiles and drones would pave the way for "a more dangerous, more volatile Middle East".
Writing by Stephen Coates and Charlie Devereux