Iran has offered a new 14-point proposal to the United States in the latest diplomatic step to reach a permanent end to the war, which has exposed the limits of US military dominance and shaken the global economy.

Responding to the new proposal on Saturday, US President Donald Trump said he is studying it but is not sure he can make a deal with Iran, a day after he voiced frustration with a previous offer from Tehran through the mediator Pakistan.

Late on Thursday, Tehran sent the proposal to Pakistan, which got the two sides to agree on the ceasefire. According to the Iranian Tasnim news agency, the 14-point plan was formulated in response to a nine-point US plan.

But weeks since the ceasefire began on April 8, Washington and Tehran have been unable to negotiate a peace deal. Tehran wants a permanent end to the war, while Trump has insisted that Iran first end the effective blockade of the Strait of Hormuz, through which a fifth of global oil and gas exports pass. The US president has also made the issue of Iran’s nuclear capability a “red line”.

Iran’s de facto blockade of the strait came in response to the US and Israel launching attacks on the country on February 28. A naval blockade of Iranian ports by the Trump administration, despite the ceasefire deal, has heightened tensions.

The US and Iran have also been continuing to attack, capture, and intercept each other’s ships, pointing to an ongoing naval war still playing out in the Strait of Hormuz.

So what’s the new proposal, and will President Trump accept it?

Here’s what we know:

What is Iran’s 14-point proposal to end the war?

According to Iranian media reports, Tehran’s new proposal came in response to a Washington-backed nine-point peace proposal, which primarily sought a two-month ceasefire.

However, in its latest peace proposal, Iran said it wants to focus on ending the war instead of extending the truce and wants all issues resolved within 30 days.

The new proposal calls for guarantees against future attacks, a withdrawal of US forces from around Iran, the release of frozen Iranian assets worth billions of dollars and the lifting of sanctions, war reparations, ending all hostilities, including in Lebanon, and “a new mechanism for the Strait of Hormuz”.

Iran, which was also attacked by the US and Israel last June, wants a guarantee against future aggression. Israel has previously targeted Iranian nuclear scientists and run campaigns to sabotage its nuclear sites.

Tehran also wants its right to uranium enrichment guaranteed as a signatory to the Non-Proliferation of Nuclear Weapons (NPT), but Trump has made the nuclear issue a “red line”. Iran wants decades of sanctions, which have devastated its economy, to be lifted as part of any deal. The navigation through the strait and demands for war reparations are other sticking points in the talks.

According to a report by Iranian state broadcaster IRIB, after delivering the proposal, Deputy Foreign Minister Kazem Gharibabadi said, “Now the ball is in the United States’ court to choose the path of diplomacy or the continuation of a confrontational approach.”

Paul Musgrave, an associate professor of government at Georgetown University in Qatar, said Iran has “slightly softened” its proposal.

“The news reports on it indicate that there is a slight softening in the proposal, or rather a run-up to discussing the proposal, namely that the Iranian side may have given up its precondition that the US cease its distant blockade of Iranian traffic [in the Strait of Hormuz],” he told Al Jazeera.

“Beyond that, though, a lot of the things that are reportedly in the proposal include maintaining Iran’s sovereign ability to enrich uranium, its nuclear programme and, of course, what it delicately refers to as a ‘control mechanism’ over shipping in the Strait of Hormuz.”

Musgrave said on the two biggest issues – enrichment of uranium and transferring its highly enriched uranium – the US and Iran remain “far apart”.

“President Trump has been unyielding that Iran must surrender its nuclear capability,” he said.

Kenneth Katzman, a senior fellow at New York-based nonprofit Soufan Center, said Iran’s mistrust of Trump remains a bigger obstacle.

“The differences on the nuclear issues are actually … not that great a difference any more. It’s still substantial, but can be narrowed. The issue is that Iran really mistrusts Trump and the United States and does not want to move, really, into full discussion until this blockade is lifted,” he said.

“That’s a problem that could lead to US escalation. As Trump knows, he must break this Iranian control of the strait, so that’s where the issue is.”

Katzman said while both sides are “frustrated”, neither is likely to give up on the negotiations in the immediate future.

How did the US respond?

Trump has said he is reviewing Iran’s proposal, but warned that Washington could resume attacks if Tehran “misbehaves”.

Speaking to reporters in Florida before boarding Air Force One on Saturday, Trump confirmed that he had been briefed on the “concept of the deal”.

Despite the diplomatic opening, the president struck a characteristically blunt tone regarding the possibility of renewed hostilities, which have been paused since the ceasefire.

“If they do something bad, there is a possibility it could happen,” Trump said when asked if strikes would resume.

Trump added that the US was “doing very well” and claimed that Iran was desperate for a settlement because the country had been “decimated” by months of conflict and a naval blockade.

Trita Parsi from the Quincy Institute for Responsible Statecraft told Al Jazeera the economic cost of the blockade on Iranian ports has exceeded what the White House anticipated and argued that the broader strategic damage to the US was probably more significant.

“Iran has been under all kinds of economic pressure and sanctions for 47 years,” Parsi told Al Jazeera. “None of them has managed to break the Iranians or force them to capitulate,” he said.

In a post on Truth Social later on Saturday, Trump said it was difficult to imagine that the Iranian proposal would be acceptable as Tehran had “not yet paid a big enough price for what they have done to Humanity, and the World, over the last 47 years”.

Trump seems to have rejected the new Iranian proposal “without reading it or being briefed on it”, according to Musgrave from Georgetown University.

What are the previous peace proposals to end the conflict?

Iran’s latest proposal comes amid a fragile three-week truce that came into effect on April 8 and has put a pause on the US-Israel war on Iran.

A day before the ceasefire, Iran had proposed a 10-point peace plan, which included an end to conflicts in the region, a protocol for safe passage through the Strait of Hormuz, the lifting of sanctions and reconstruction, state-run news agency IRNA reported.

Trump had said Iran’s 10-point plan was a “significant proposal” but “not good enough”.

The April 7 proposal from Iran came in response to a 15-point plan drafted by the US on March 25.

Washington’s plan included a one-month ceasefire while the two sides negotiated terms to end the war, via Pakistan.

According to Israel’s Channel 12, it also included the dismantling of Iran’s nuclear facilities in Natanz, Isfahan and Fordow, a permanent commitment from Iran to never develop nuclear weapons, the handover of Iran’s stockpile of already enriched uranium to the International Atomic Energy Agency (IAEA), a commitment from Iran to allow the United Nations watchdog to monitor all elements of the country’s remaining nuclear infrastructure, reopening of the Strait of Hormuz and end of all sanctions on Iran, alongside the ending of the UN mechanism that allows sanctions to be reimposed.

Iran, however, rejected this plan and said a temporary ceasefire would give the US and Israel time to regroup and launch further attacks and in turn proposed its 10-point plan.

What is the situation on the ground now?

Despite a ceasefire, the Islamic Revolutionary Guard Corps (IRGC) said on Saturday that it remains on “full standby” for a return to hostilities, citing the US’s lack of commitment to previous treaties.

In a post on X on Sunday, the IRGC’s intelligence unit said, “There is only one way to read this: Trump must choose between an impossible military operation or a bad deal with the Islamic Republic of Iran. The room for US decision-making has narrowed.”

The impasse is further complicated by technical obstacles to reopening the Strait of Hormuz, including the presence of Iranian sea mines. Tehran has closed the strait since the war began on February 28, upending global oil and gas prices.

To pressure Iran to open the strait, the US imposed a blockade of all Iranian ports on April 13, stoking the oil and gas crisis. On Friday, Brent crude, the international benchmark, was at $111.29 per barrel at 08:08 GMT, compared with about $65 before the war.

Tensions have been further stoked by Trump’s recent characterisation of the US naval blockade as a “very profitable business”.

“We took over the cargo. Took over the oil, a very profitable business. Who would have thought, we’re sort of like pirates, but we’re not playing games,” Trump said at an event in the US state of Florida on Saturday.

Tehran’s Ministry of Foreign Affairs seized on the remarks, labelling them a “damning admission of piracy”.

Parsi from the Quincy Institute told Al Jazeera the US naval blockade of Iran has backfired on Trump and is making the situation worse.

“The negotiations were taking place and could have continued regardless of the blockade,” he said.

“The blockade has nothing to do with the Iranians being at the table. If anything, it is blocking diplomatic progress more than anything else,” Parsi noted.

He argued that Trump had actually secured his greatest advantage through diplomacy before the blockade was imposed.

“Once he managed to get the ceasefire, the primary pressure on him, the war itself and the way it was pushing up gas prices, was lifted. Had he stayed in that scenario and used time to his advantage, he would have been in a much stronger position vis-a-vis the Iranians, because the Iranians had not managed to get the key thing they wanted: sanctions relief.”

Instead, by imposing the blockade, Trump took more oil off the market.

“Oil prices are now higher during the ceasefire than they were during the war itself. All of these economic indicators show that the blockade is making the situation worse for Trump,” Parsi said.

However, Trump has been looking at options to resolve the oil crisis, including setting up a naval coalition called the Maritime Freedom Construct (MFC) to restore freedom of navigation in the Strait of Hormuz.

According to US media reports, core functions of the naval coalition would be to share intelligence among member nations, coordinate diplomatic efforts, and enforce sanctions to manage shipping traffic through the strait.