Iran and Oman take Hormuz in-house: what the new MoU actually changes

At 12:09 UTC on 15 June 2026, the spokesperson of Iran's Ministry of Foreign Affairs, Ismael Baqaei, stepped in front of the cameras in Tehran and tried to perform two contradictory things at once. He framed a freshly signed memorandum of understanding between Iran and Oman on the Strait of Hormuz as a routine piece of bilateral housekeeping, while also claiming, in the same breath, that the agreement "obliges the United States to completely cancel the sanctions." Within ten minutes he had reassured listeners that "we are not seeking tolls," and within twenty that Iran and Oman would jointly "ensure the security of traffic" through the waterway. Each of these statements was broadcast live by Iranian state-linked channels and is now travelling around regional desks as a single, contradictory package. The package is, in fact, the story.

The MoU is the first time in the modern era that the two states flanking the Strait of Hormuz — through which roughly a fifth of the world's seaborne oil transits on a normal day — have publicly asserted joint stewardship of the chokepoint under an arrangement that is not mediated by the United States, the United Nations' International Maritime Organization, or any Western naval command. The diplomatic text has not been published, and Baqaei said on 12:18 UTC that "the details of the diplomatic aspects of the agreement will be published in the media soon." What is on the record is the architecture: Iran and Oman as the two sovereign managers of passage, fees for navigation services and ship insurance, and a sanctions-relief clause that the Iranian side is treating as the deal's centre of gravity.

What Tehran is actually claiming

The two Iranian readouts — carried by the Tasnim news agency and the Al Alam Arabic-language channel, both state-affiliated — describe a layered arrangement. The first layer is jurisdictional: Iran and Oman, the two riparian states, exercise "sovereign" management of the strait, with transit "managed" between them. The second is fiscal: rather than tolls in the older sense, the MoU frames charges as "fees for the services that are provided," explicitly referencing navigation services and ship insurance. The third is a quiet security guarantee: Iran and Oman will "ensure the security of traffic," language that does not name a third-party guarantor and that, in a region where the United States Fifth Fleet and Royal Navy frigates have been the visible enforcers of safe passage since the 1980s, reads as a deliberate non-mention.

The fourth layer is the one doing the most work in Tehran. "The recent agreement," Baqaei said in his Tasnim interview, "requires the United States to completely lift the sanctions." That is a stronger reading than any Western reporting on the US-Iran track has so far supported. The Iranian side is also keeping a separate ledger open: "releasing the frozen assets," Baqaei said, is "Iran's legal and economic right." Treat those as the negotiating position, not the settled text, and the contradictions of the press conference start to make sense as choreography. Iran wants the maritime architecture and the financial architecture locked together; the United States, by every indication, has wanted to keep them in separate lanes. The MoU as described from Tehran is a one-paper attempt to fuse them.

Why Oman, why now

Oman is the obvious and, in some ways, the only possible Iranian partner for a project like this. The sultanate shares the southern shore of the strait, has refused to join the Saudi-Emirati axis against Iran, has hosted back-channel US-Iran talks since at least 2013, and has diplomatic depth in Tehran that the GCC heavyweights no longer enjoy. A Hormuz MoU gives Muscat a structural reason to remain the indispensable go-between, and gives Tehran a regional co-signatory that the US Treasury cannot easily squeeze. The choice also signals, quietly, where the Arab world's centre of diplomatic gravity is shifting: not Riyadh, not Abu Dhabi, not Doha, but Muscat.

The timing is harder. The MoU is being announced in the same week that US and Iranian negotiators have, by multiple wire accounts, edged closer to a working framework on the nuclear file. If the maritime arrangement had been negotiated with US knowledge and consent, Baqaei would not need to stress the sanctions-lift clause to a Tasnim audience; he would let the Americans read it out in Washington. The fact that he is doing the opposite suggests either that the US-Iran track is further apart than the headline-driven reports suggest, or that Tehran has decided the maritime card is a useful pressure point precisely because the nuclear card is in play. Reading the same set of statements, one can construct both explanations. The MoU itself does not adjudicate between them.

A structural break with the post-1980s order

For four decades, the international law of the Strait of Hormuz has rested on an awkward compromise. Under the 1982 UN Convention on the Law of the Sea, transit passage through international straits is to be "continuous and expeditious," and coastal-state sovereignty is constrained so as not to hamper that right. In practice, the strait has been kept open not by the convention's text but by the visible presence of Western fleets and by an unspoken understanding that neither Iran nor any other littoral state would seriously impede commercial traffic. The MoU as described from Tehran pushes against both layers at once. It asserts a bilateral, riparian claim to "manage passage." It introduces fees for navigation services and insurance, the kind of charges that international maritime lawyers have spent decades arguing are impermissible in an international strait. And it does so in a way that is conspicuously silent about any non-littoral party's role.

None of this is, on its own, a closure of the strait. Iran and Oman have an interest in keeping the oil flowing. But the framework is the kind of incremental move that, if other capitals accepted it quietly, would change the law of the waterway by practice rather than by treaty. The historical analogy is not the 1956 Suez closure but the slow postwar narrowing of state control over the Panama and Suez canals, in which the operating state ended up setting the terms of transit without ever formally renouncing international norms. The US response to the MoU, when it comes, will signal whether Washington reads this MoU as that kind of precedent or as a piece of Iranian bargaining theatre.

What it does not change — and what the next seven days will tell

There are limits. The Iranian statements concede nothing about demilitarising the strait, and Baqaei's reference to "ensuring security" of traffic in tandem with Oman leaves the role of the US Fifth Fleet entirely undefined. Insurance markets, which set the actual cost of a transit through Hormuz on a day-to-day basis, are not subject to Iranian or Omani regulation; Lloyd's of London and the P&I clubs will price the new "fees" into the war-risk premia they already charge, and shipowners will, in the end, route on price. The sanctions-lift claim has no published text behind it, and the US Treasury has not, in any public readout, recognised a maritime arrangement as a vehicle for lifting the architecture it has spent two decades building.

The next seven days will resolve the most consequential questions. Three of them are concrete. First, will the MoU text be published, and if so, in whose language? Second, will the United States treat the MoU as an Iranian negotiating position inside the nuclear track, or as a separate sovereign claim that requires a separate response? Third, will the GCC — Saudi Arabia, the UAE, Qatar, Bahrain, Kuwait — treat the Iran-Oman arrangement as a fait accompli, contest it, or seek to be added to it? Each of these is observable, and the answers, in this corner of the world, will be in the wire by the end of the week.

There is also a fourth question, the one the spokespeople in Tehran conspicuously avoided on 15 June. In the same press window, Baqaei returned to a familiar register: "we are always thirsty for the blood of all the martyrs," and "legal action for the blood of martyrs is a permanent and unchanging ideal." That language sits uneasily beside the technocratic vocabulary of "navigation services" and "transit management." Both registers are now part of the same Iranian foreign-policy output, and the question of which one ends up governing the actual transit of tankers through Hormuz is, for the moment, the question that holds the rest of the file together.

Desk note: The wire readouts on this story are dominated by Iranian state-affiliated channels (Tasnim, Al Alam, the Foreign Ministry spokesperson's office) and by Telegram aggregators. Monexus has published the Iranian claims in full and at the same weight we would give a US State Department briefing. Until the MoU text is public, this article is best read as a structured account of the Iranian position, not as a settled narrative.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://t.me/Middle_East_Spectator
• https://t.me/alalamfa
• https://t.me/alalamfa
• https://t.me/JahanTasnim
• https://t.me/alalamfa
• https://t.me/JahanTasnim
• https://t.me/JahanTasnim
• https://t.me/alalamfa
• https://t.me/JahanTasnim