On the eve of a US deadline, the United States and Iran on Monday were weighing the framework of a plan to end their five‑week-old conflict, even as Tehran pushed ​back against pressure to swiftly reopen the Strait of Hormuz.

President Donald Trump has threatened to rain ‘hell’ on Tehran if it did not make a deal by the end of Tuesday that would allow traffic to ‌start moving again through the vital route for global energy supplies.

The Pakistani-brokered plan emerged from intense overnight contacts and proposes an immediate ceasefire, followed by negotiations on a broader peace settlement to be concluded within 15 to 20 days, a source aware of the proposals said on Monday.

Pakistan's army chief, Field Marshal Asim Munir, was in contact “all night long” with US Vice President JD Vance, special envoy Steve Witkoff and Iranian Foreign Minister Abbas Araqchi, the source said.

Iran’s foreign ministry said on Monday that Tehran had formulated positions and demands based on its interests and communicated them through intermediaries ​in response to ceasefire proposals.

Ministry spokesperson Esmaeil Baghaei said details of the response would be announced in due time, but added negotiations were “incompatible with ultimatums and threats to commit war crimes.”

Iran's demands “should not be interpreted as a sign ​of compromise, but rather as a reflection of its confidence in defending its positions,” Baghaei told a press conference. He said earlier US demands, such as a 15-point plan, were rejected for being excessive.

Earlier on Monday, a senior Iranian official told Reuters that Iran will not reopen the Strait as part of a temporary ceasefire, nor would it accept deadlines or pressure to reach a deal. Washington was not ready for a ​permanent ceasefire, the official said.

Ceasefire Proposal ‘One of Many Ideas’

Trump will speak about the ceasefire proposal at a press conference at 1 pm ET (1800 GMT), a White House official told Reuters.

“This is one of many ideas, and (Trump) has not signed off on it. Operation ​Epic Fury continues,” they said, referring to the US name for the operation against Iran.

US stock index futures inched higher on Monday while oil prices fell by over $2 a barrel at one point as investors assessed the prospect of a ceasefire.

In a post laden with expletives on his Truth Social platform on Sunday, Trump threatened further strikes on Iranian energy and transport infrastructure if Iran failed to make a deal and reopen the Strait by Tuesday. Later on Sunday, the president in a follow-up post gave a more precise deadline: “Tuesday, 8:00 pm Eastern Time! (Wednesday 0000 GMT)”

Anwar Gargash, an adviser ​to the president of the United Arab Emirates, said any settlement must guarantee access through 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”.

Fresh aerial strikes were reported across the region on Monday, more than five weeks since the US and Israel began pounding Iran in a war that has killed thousands and damaged economies by sending oil prices surging.

Iranian state media said the head of the ‌Revolutionary Guards’ intelligence organisation, Majid Khademi, has died. Israel on Monday claimed responsibility for his death.

A US-Israeli attack hit the data centre at Sharif University of Technology in Tehran, damaging infrastructure underpinning the country’s national artificial intelligence platform and thousands of other services, Fars News Agency said on Sunday.

Israel Vows to Destroy Iran’s Infrastructure

Israel’s Defence Minister, Israel Katz, in a statement issued on Monday, threatened to destroy Iran’s infrastructure and hunt down its leaders “one by one”.

Israel said on Monday it had attacked Iran's South Pars petrochemical complex in Asaluyeh. Emergency and firefighting teams brought a blaze under control at the complex, Iran's National Petrochemical Company. No casualties were reported.

The petrochemical complex’s power supply was cut off after two companies supplying it with electricity, water and oxygen were attacked, Tasnim news agency ​said.

An Israeli attack in mid-March on the South Pars gas field ​that Iran shares with Qatar prompted an escalation in ⁠the war, with Iran striking energy targets across the Middle East.

The International Atomic Energy Agency on Monday confirmed military strikes close to Iran's Bushehr nuclear power plant, but said that the plant itself was not damaged.

Trump has repeatedly warned Iran that he could expand US strikes to include civilian infrastructure, such as power plants and bridges.

Experts say such attacks could constitute war crimes, but the ​International Criminal Court lacks jurisdiction because the countries involved are not members of the court.

The Geneva Conventions say that parties involved in military conflict must distinguish between “civilian objects and military objectives”, ​and that attacks on civilian objects are forbidden.

Iran Continues to Fight Back

Iranian weekend strikes on petrochemical facilities and an Israeli-linked vessel in Kuwait, Bahrain and the UAE underscored the country's ability to fight back despite Trump's repeated claims to have knocked out its missile and drone capabilities.

Iran has responded to US and Israeli attacks by effectively closing Hormuz, a conduit for about a fifth of the world's oil and natural gas supply, and attacking Israel, US military bases and energy infrastructure around the Gulf.

About 3,540 people have been killed in Iran in the war, including at least 244 children, ​said US-based rights group HRANA.

At least four Israelis were killed in a missile attack on a residential building in Haifa in northern Israel overnight, Israeli ​emergency service MDA said on Monday, bringing the total number of Israeli civilian fatalities from Iranian and Hezbollah attacks to 23.

Israel has also invaded southern Lebanon and struck Beirut in a fight against Iran-backed Hezbollah militants that has become the most violent spillover of the war on Iran.

Lebanon’s heavy casualties include 1,461 ​killed, including at least 124 children, Lebanese authorities say.

Thirteen US service members have died, and hundreds of others have been wounded.