Dubai | Iran has received an American plan to pause the war in the Middle East, officials said Wednesday, a proposal sent even as Washington deploys paratroopers and more Marines to the region.

Tehran did not confirm receiving the plan and publicly dismissed the diplomatic effort while launching more attacks on Israel and Gulf Arab countries, including an assault that sparked a huge fire at Kuwait International Airport. Iran also continued to come under attack.

Two officials from Pakistan, which delivered the plan to Iran, described the 15-point proposal broadly, saying it addressed sanctions relief, a rollback of Iran's nuclear program, limits on missiles and reopening the Strait of Hormuz, a crucial waterway through which a fifth of the world's oil is shipped.

An Egyptian official involved in the mediation efforts added that the proposal includes restrictions on Iran's support for armed groups. The officials spoke on condition of anonymity to discuss details not yet released.

Some of those points were nonstarters in negotiations before the war: Iran has insisted it won't discuss its ballistic missile program or its support of regional militias, which it views as key to its security. And its ability to control passage through the Strait of Hormuz represents one of its biggest strategic advantages.

Iran's attacks on regional energy infrastructure along with its restrictions on the strait have sent oil prices skyrocketing and rocked world markets over fears of a global energy crisis, in turn putting pressure on the US to find a way to end the chokehold and calm markets.

More US troops are on the way to the region

At least 1,000 troops from the 82nd Airborne Division will be sent to the Mideast in the coming days, three people with knowledge of the plans told The Associated Press. They spoke on condition of anonymity to discuss sensitive military plans.

The paratroopers are trained to jump into hostile or contested areas to secure key territory and airfields.

The Pentagon is also in the process of sending about 5,000 more Marines, trained in amphibious assaults, and thousands of sailors to the region.

Diplomatic efforts face major challenges

The 15-point plan now in Iranian hands is "a comprehensive deal" to reach a ceasefire, according to the Egyptian official.

Mediators are pushing for possible in-person talks between the Iranians and the Americans, perhaps as soon as Friday in Pakistan, the Egyptian and Pakistani officials said.

Speaking Tuesday at the White House, Trump said the US is "in negotiations right now" and that the participants included special envoy Steve Witkoff, his son-in-law Jared Kushner, Secretary of State Marco Rubio and Vice President JD Vance. He has not said who from Iran they are in contact with.

"We have a number of people doing it," Trump said. "And the other side, I can tell you, they'd like to make a deal." Iran's Khatam Al-Anbiya Central Headquarters, which commands both the regular military and the paramilitary Revolutionary Guard, dismissed the idea of talks.

Iranian leaders have repeatedly denied they are happening, while acknowledging that the foreign minister is in contact with various countries but not the US or Israel.

"Our first and last word has been the same from day one, and it will stay that way: Someone like us will never come to terms with someone like you," Lt. Col. Ebrahim Zolfaghari, a spokesman for the headquarters, said in the video statement aired on state television. "Not now, not ever."

Israeli officials, who have been advocating for Trump to continue the war against Iran, were surprised by the submission of a ceasefire plan, according to a person who was briefed on the contours of the proposal and also confirmed it had been submitted. They spoke on condition of anonymity because they were not authorised to speak publicly.

Any talks between the US and Iran would face monumental challenges. It's not clear who in Iran's government has the authority to negotiate, or would be willing to, as Israel has vowed to continue killing the country's leaders.

Iran remains highly suspicious of the United States, which twice under the Trump administration has attacked during high-level diplomatic talks, including with the February 28 strikes that started the current war.

Israel launches new strikes on Iran

The Israeli military announced new wide-scale attacks on Iran early Wednesday targeting government infrastructure, and witnesses reported airstrikes in the northwestern city of Qazvin.

Missile alert sirens sounded multiple times in Israel as Iran launched its own attacks.

Iran also kept up the pressure on its Gulf Arab neighbours, with Saudi Arabia's Defence Ministry saying it had destroyed at least eight drones in the kingdom's oil-rich Eastern Province, and missile alert sirens sounding in Bahrain.

Kuwait said it shot down multiple drones but one hit a fuel tank at Kuwait International Airport, sparking a fire, the General Civil Aviation Authority said. Firefighters were working to contain the blaze.

Iran's death toll has passed 1,500, its Health Ministry has said. In Israel, 16 people have died. At least 13 US military members have been killed, along with more than a dozen civilians in the occupied West Bank and Gulf Arab states.

Meanwhile, authorities say more than 1,000 people have died in Lebanon, where Israel has targeted the Iran-linked Hezbollah militant group, which has also fired on Israel.

Energy prices fall back but remain high

The news of potential negotiations drove down the price of oil, after it skyrocketed in recent weeks.

Brent crude oil, the international standard, has neared USD 120 a barrel during the conflict but was trading below USD 100 Wednesday. It is still up around 35 per cent from the start of the war.

Economists and leaders have warned of far-reaching effects if energy prices remain high, from rising prices on food and other basics to higher rates for mortgages and auto loans.

A big driver of the spike in the oil price has been Iran's stranglehold on the Strait of Hormuz, which leads from the Persian Gulf to the open ocean. Iran has allowed a small number of ships through the strait, but has said no ships from the US, Israel or countries seen as linked to them can pass.