Rubio seeks to reassure Gulf states over Iran deal

They have expressed concern that excessive concessions made to secure the deal will ultimately help strengthen Tehran and reshape the region's security balance and oil flows

Rubio seeks to reassure Gulf states over Iran deal

While US President Donald Trump has indulged in his usual hyperbole to describe the US-Iran deal as achieving "everything we set out to accomplish,” Gulf leaders are far more circumspect about the likely implications, especially what it means for freedom of navigation through the Strait of Hormuz and Iran’s nuclear ambitions.

There is a widely held view among Gulf Arab leaders that the deal broadly favours Iran, and there are concerns that excessive concessions Trump made to secure the deal will ultimately help strengthen Tehran and reshape the region's security balance and oil flows. As one senior Gulf leader remarked to me earlier this week, following the signing of the 14-point Memorandum of Understanding between Washington and Tehran, “Iran is the winner. Now we have to live with the consequences.”

The most immediate concern for Gulf leaders is the future status of the Strait of Hormuz. Trump insisted that, as part of the deal negotiated with Iran, the vital supply route would be fully reopened after both Iran and the US agreed to lift their respective blockades. But Iran has said it retains the right to charge fees for commercial shipping passing through the strait, to recuperate the cost to rebuild what the US and other involved players destroyed during their war on the country.

In an attempt to reassure Washington’s Gulf allies, Trump said tolls on ships sailing in the Strait of Hormuz would be a red line issue for the US in upcoming negotiations with Iran, which are due to take place while the current 60-day ceasefire remains in place. And in the first visit by an American cabinet member to the Gulf since the US launched the war against Iran in February, US Secretary of State Marco Rubio sought to assure Gulf officials that the proposed deal was not overly favourable to Iran while visiting the United Arab Emirates, Kuwait, and Bahrain.

"We're not going to do anything that undermines the security of our allies, our longstanding allies in the region," he ​told reporters in Kuwait. Speaking in Kuwait City, Rubio insisted the agreement was "going to be completely aligned with our partners in the Gulf...If Iran wants to make a good, real deal, the United States is open to it. If they're not, then of course the president has options," Rubio told reporters, adding that negotiators were likely to meet again in Switzerland before the end of the month.

Separately, there are plans for regional ​reconciliation talks to be held in Saudi Arabia between Iran, Gulf Arab states and possibly other regional countries, a diplomat told Reuters.

We're not going to do anything that undermines the security of our allies, our longstanding allies in the region.

US Secretary of State Marco Rubio

Nuclear concerns

The other area of major concern for Gulf leaders regards Iran's nuclear ambitions and the fate of the estimated 400 kilos of weapons-grade enriched uranium that Tehran acquired prior to the outbreak of hostilities. While Trump continues to insist that Iran, as part of the memorandum signed last week, has agreed to dilute the strength of the uranium and agree to nuclear inspections, Iran continues to insist that it has so far not made any concessions in the negotiations to date.

This has led to a very public dispute between the US and Iran over the issue of UN nuclear inspectors for the International Atomic Energy Agency (IAEA) visiting sites in the country. On Monday, following talks in Switzerland with Iran's chief negotiator, US Vice President JD Vance said Iran had "agreed to invite IAEA inspectors back into their country". But the next day, an Iranian foreign ministry spokesman said there had been "no detailed discussions" and that Iran had no plans to grant IAEA inspectors access to nuclear facilities, which were bombed by the US during a 12-day war between Israel and Iran in June 2025.

Iranian Deputy Foreign Minister Kazem Gharibabadi later wrote on X that access to Iran's damaged nuclear facilities and its nuclear materials would only be addressed within the framework of a final agreement with the US and after practical steps had been taken to lift all sanctions. "Media noise cannot be used to impose facts on the ground," he added.

US Secretary of State Marco Rubio sought to assure Gulf states that the deal was not overly favourable to Iran while visiting the UAE, Kuwait, and Bahrain.

Rafael Grossi, the head of the IAEA, attempted to play down the dispute, insisting that the nuclear watchdog will carry out inspections in Iran under the country's preliminary peace agreement with the US.

"The inspections will indeed take place," Grossi told reporters in Japan. "We will be working on the modalities - dates, procedures, places, very soon." The agreement signed last week said "explicitly" that the dilution of Iran's highly enriched uranium would be carried out under IAEA supervision, he added.

"There's a war or words here. Some say 'yes', others say 'no'," he added. "I can understand political statements. They are part of the reality. But the main thing is that there has been a memorandum of understanding signed by both presidents," he added. " It says explicitly that the nuclear activities that are going to be carried out, with regard to nuclear material and facilities, will be supervised by the IAEA, in bold letters. This is going to happen."

Nevertheless, with both the US and Iran continuing to dispute the likely outcome of any final agreement, it is clear that much work remains to be done before either side can say with any confidence that the conflict has finally been resolved.

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