FACT-CHECK: Iran and Oman — Verifying the Geography of Diplomatic Complicity

Introduction: Oman, the obligatory passage everyone knows but few want to name

The claim to verify

Asserting that Oman is the indispensable diplomatic channel for any mediation with Iran has become a commonplace of Middle Eastern geopolitical analysis. But commonplaces deserve verification, especially when the stakes are as high as the management of the Strait of Hormuz, through which approximately 20% of the world's oil transits. In June 2026, this relationship takes on critical dimensions: Iran is using its Omani contacts to reinterpret the terms of a ceasefire agreement negotiated in Switzerland with the United States, and is attempting to transform a one-off mediation into a permanent regional architecture granting itself a co-management role over the Strait.

This fact-check examines three claims commonly made about the Iran-Oman relationship: (1) Oman is the only reliable diplomatic channel with Iran; (2) Iran is seeking to collect tolls in the Strait of Hormuz; (3) the current negotiations via Oman could produce a durable agreement. Each claim is examined in light of data available as of June 26, 2026.

The immediate factual context: Muscat, June 2026

On June 23, 2026, Iranian officials including Parliament Speaker and chief negotiator Mohammad Bagher Ghalibaf met with their Omani counterparts in Muscat. The following day, June 24, Qatari officials held their own discussions with Oman on the conclusions of those exchanges regarding Strait management. Qatar saw an opportunity to broaden discussions to Iraq and Gulf states. These facts are documented by the Institute for the Study of War (ISW) report of June 24, 2026 and by Reuters.

Claim 1: "Oman is the only reliable diplomatic channel with Iran"

What is true: a documented historical role

PARTIALLY TRUE. The claim of Oman's exclusive role is overstated, but its central importance is genuine and well-documented. Oman did indeed serve as a secret channel for the American-Iranian negotiations that led to the 2015 JCPOA. Secret meetings took place in Muscat between American and Iranian diplomats as early as 2012, well before official multilateral negotiations. Sultan Qaboos, before his death in 2020, had built this mediator position over several decades of carefully cultivated neutrality — maintaining normal relations with Iran while being a member of the Gulf Cooperation Council (GCC).

But Oman is not the only channel. Qatar has played a similar role in distinct dossiers — notably in the Gaza negotiations and as intermediary between Washington and Hamas. Switzerland hosted the direct US-Iran negotiations of June 2026, conducted by Vice President JD Vance. These channels coexist, complement each other, and sometimes compete. What makes Oman particularly valuable is its combination of geographic proximity to Iran, long-established relations, and credibility of neutrality that Qatar does not always possess in the eyes of Riyadh and Abu Dhabi.

What is less certain: the durability of the role

Since the death of Sultan Qaboos and the accession of Sultan Haitham bin Tariq in 2020, Oman has maintained its mediation policy but with personally less consolidated diplomatic resources than its predecessor. In the context of June 2026, the fact that Ghalibaf travels personally to Muscat signals that Tehran continues to consider this channel a priority. But Oman's role in discussions about the Strait of Hormuz goes beyond traditional mediation — it implies that Oman accepts being the intermediary for an Iranian proposal that exceeds ordinary mediation capacities.

Claim 2: "Iran is seeking to collect tolls in the Strait of Hormuz"

What is true: Iran wants an institutional role

INACCURATE IN FORMULATION, GROUNDED IN INTENT. The ISW specifies in its report of June 24 that Gulf states are planning to push for no "transit fees," and that an anonymous diplomat indicated that Iran "might" push for environmental, navigation, or security fees. The key word is "might" — this is not a formally documented demand but a perceived intention.

What can be stated with certainty is that Iran seeks to obtain an institutional role in managing the Strait — which is different from collecting "tolls" in the strict sense. The Strait of Hormuz is an international waterway governed by UNCLOS, which Iran has ratified. No state can legally impose tolls on that type of waterway. What Iran is seeking, according to ISW analysis, is to transform Strait discussions into negotiations about a "new regional architecture in the Gulf" that would reduce American and Israeli influence. The Strait is the lever — not the end goal in itself.

What Qatar said and what it reveals

Qatari Prime Minister and Foreign Minister Mohammed bin Abdulrahman al Thani declared on June 24 to the Financial Times that Qatar was open to discussing Iranian plans for Strait co-administration with Oman — but explicitly rejected any plan that would "control" the Persian Gulf, calling it a "gateway to the world." That declaration is revealing: Qatar did not exclude all modalities — it excluded direct control, leaving open the door to more subtle arrangements that could give Iran a consultative or partial oversight role.

Iran's strategy: from ceasefire to regional architecture

How Iran transforms a military defeat into a diplomatic victory

Iran sustained significant military strikes during the recent conflict with the United States and Israel. Its direct military capacity was degraded — according to available analytical sources. And yet, as of June 24, 2026, it is Tehran that appears to be setting the terms of the regional dialogue. How? By linking the ceasefire to discussions about a broader reform of the Gulf security architecture. The 60-day agreement negotiated in Switzerland tasks Iran with discussing with Oman and Gulf states the future modalities of Strait management — turning an existential threat into a diplomatic opportunity.

Iranian Brigadier General Esmail Ahmadi Moghaddam declared on June 24 in a speech that he wished to strengthen Iran's strategic relations with its neighbors in the post-war period. Foreign Minister Abbas Araghchi was simultaneously discussing "regional cooperation" with his Saudi counterpart Faisal bin Farhan. This diplomatic simultaneity is coordinated — Tehran is working to reshape the image of a post-war Iran into an indispensable actor of regional stability.

The Iranian argument against American military presence

Iranian Foreign Ministry spokesperson Esmail Baghaei declared on June 24 that "as long as the United States militarily interferes in the region, the Middle East will never achieve lasting peace." This position is not new — it has been at the heart of Iranian doctrine for decades. But in the context of current negotiations, it takes on operational value: Iran is offering Gulf states the chance to trade American guarantees for accommodation with Tehran. It is a strategy of guardian substitution, and the ISW is right to highlight that some Gulf states — exhausted by conflicts, anxious for their economies — might be tempted to lend it an ear.

Claim 3: "Negotiations via Oman can produce a durable agreement"

What is plausible: a concerted management architecture

POSSIBLE BUT HIGHLY UNCERTAIN. Historical precedent suggests Oman can provide a framework for agreements that hold over time — Muscat's role in the JCPOA negotiations demonstrated that. An agreement on concerted management of the Strait of Hormuz involving Iran, Oman, Qatar, and other littoral states would theoretically be possible if each party's interests are satisfied. Such an agreement could include a multilateral monitoring mechanism, emergency communication protocols, and non-militarization commitments for the Strait.

Saudi Arabia is reportedly preparing a "reconciliation summit" between Iran and Arab Gulf states according to AFP information of June 24. If Riyadh directly engages, the dynamic changes substantially — Saudi Arabia has the economic and political weight to impose conditions Iran could not ignore. The restoration of Saudi-Iranian diplomatic relations in 2023, facilitated by China, demonstrated that rapprochements can happen quickly when motivations are sufficient.

What is suspect: Tehran's real intentions

The ISW is explicit in its assessment: Iran seeks to "exploit its engagements with Gulf states to slide discussions toward reducing US and Israeli influence and partnerships in the Gulf." In other words, Strait discussions are a pretext for a broader conversation about American withdrawal from the region. In this context, any agreement giving Iran an institutional role in Strait management without robust guarantees of freedom of navigation risks becoming a stepping stone for further claims.

The energy geopolitics of the Strait: why everyone is a hostage

Gulf oil as a negotiating weapon

The Strait of Hormuz is the bottleneck through which approximately 20% of the world's oil and roughly 25% of the world's liquefied natural gas (LNG) passes. The main importers of that energy are China, India, Japan, and South Korea. These countries have fundamental interests in the free flow of energy through the Strait — giving them a stake in negotiations around its future status, even if they are not directly involved in current discussions.

Iran understands this dynamic and exploits it. By threatening to close or control the Strait, Tehran sends a signal not only to the United States but also to China and India that their energy supply depends on accommodation with Tehran. China, which restored diplomatic relations between Saudi Arabia and Iran in 2023, finds itself in a position where its energy interests and geopolitical ambitions push it to facilitate a regional agreement — but not necessarily one that reinforces American presence.

The Chinese variable in Hormuz negotiations

China imports roughly 40% of its oil from the Persian Gulf region, a significant fraction of which transits through the Strait of Hormuz. A prolonged disruption of the Strait would cost the Chinese economy tens of billions of dollars per quarter. That vulnerability gives Beijing a real motivation to involve itself in resolving the dispute over the Strait's status — but in a direction that serves its own interests, not necessarily Washington's.

China's involvement in Strait of Hormuz discussions is still limited in available information. But its mediation in the 2023 Saudi-Iranian normalization demonstrated that Beijing is willing to play an active role in Middle Eastern geopolitics when its energy interests are at stake. If discussions about Hormuz stall in American and Omani channels, China could insert itself — further complicating the American equation.

International law facing Iranian ambitions

UNCLOS as a legal bulwark — and its limits

The Strait of Hormuz benefits from the "transit passage" regime provided by UNCLOS — the right of all vessels to navigate freely through international straits. This regime applies to all states' vessels, including warships, and cannot be suspended or subjected to conditions by littoral states. Both Iran and Oman are parties to UNCLOS. In theory, therefore, no "management" architecture of the Strait can legally restrict freedom of navigation.

In practice, the distinction between "administrative management" and "navigation restriction" can be blurry. An agreement creating a mandatory reporting mechanism, traffic coordination, or "environmental inspection" could technically comply with UNCLOS while creating practical friction for non-compliant vessels. It is precisely in this legal gray zone that Iran is seeking to insert itself.

The coherence of international law with political reality

The ISW report notes with clarity that "any attempt to place the Strait under the control of one or several states would erode long-established international norms and maritime law." That statement is legally correct. But respect for international maritime law depends ultimately on the willingness of great powers to enforce it. The United States has deployed its navy to guarantee freedom of navigation in the Persian Gulf since the 1980s. If that will were to waver under a more isolationist American administration, international law would remain intact on paper but fragile in practice.

Oman and its own vulnerability in the mediator role

The price of the mediator role for Muscat

Oman is a small state — roughly 4.5 million inhabitants, 309,000 km², heavily dependent on its oil and gas exports. Its carefully cultivated policy of neutrality has allowed it to play diplomatic roles far beyond what its geographic and economic size would suggest. But that role carries a cost: it exposes Oman to pressure from all involved parties, and in particular from Iran, on which Oman partly depends for managing its own internal tensions with Shiite communities.

In the context of June 2026, Oman finds itself in the delicate position of hosting Iranian discussions on a project — the co-management of the Strait of Hormuz — that its American partners and some GCC neighbors view unfavorably. If Muscat helps Iran advance that project while maintaining its alliances with Riyadh and Washington, it is walking a tightrope whose consequences in case of imbalance could be severe.

Oman's future as mediator in a post-agreement context

If the 60-day American-Iranian deal holds and evolves toward a more permanent agreement, Oman's role as mediator could be institutionalized — Muscat could become the seat of a permanent commission monitoring commitments. That is a favorable scenario for Oman that would allow it to consolidate its unique diplomatic role. But it depends on something that the history of agreements with Iran teaches us not to take for granted: Tehran's good faith in honoring its commitments.

Iran's return to negotiations on its nuclear program after accepting a ceasefire is a positive development. But the precedents — the 2015 JCPOA unilaterally violated by the United States in 2018, then partially circumvented by Iran in response — show that agreements in this region can collapse for reasons over which Oman has no control. The mediator's vulnerability is also the mediation's vulnerability.

Conclusion: what the fact-check confirms

The confirmed truths

The fact-check confirms the following: Oman plays a central but not exclusive diplomatic role in relations with Iran — TRUE. Iran seeks an institutional role in Strait of Hormuz management beyond simple "tolls" — GROUNDED, with nuances on form. Negotiations via Oman can produce agreements — POSSIBLE, but their durability depends on robust verification mechanisms that the Iranian regime has historically circumvented.

What the facts reveal about Iran's strategy

What the fact-check reveals most clearly is not the nature of individual claims, but the overall strategic logic of Iran: using every available diplomatic channel — Oman, Qatar, Saudi Arabia — to build an institutional presence in Gulf governance that would progressively reduce American influence. This strategy is coherent, patient, and uses legal and diplomatic instruments in sophisticated ways. Recognizing it clearly is the first step toward responding to it effectively.

Signed Maxime Marquette, columnist

Columnist's transparency box

Method and limits of the fact-check

This fact-check rests primarily on the ISW special report of June 24, 2026, public statements by Iranian, Qatari, and Omani officials as reported by Reuters, the Financial Times, and AFP. I do not have access to complete transcripts of the Muscat meetings, nor to the exact terms of the US-Iran memorandum of understanding, whose details remain partially unpublished. My "TRUE," "INACCURATE," and "POSSIBLE" assessments reflect my analysis of available data — they could be revised by subsequent information.

Acknowledged bias

I am convinced that freedom of navigation in the Strait of Hormuz is a global public good that should not be subject to any particular state's control, and especially not Iran's in its current political configuration. This bias may make my assessment of a durable Iranian agreement more skeptical than that of other analysts.

Sources

Primary sources

ISW — Special Report Iran: Oman, Strait of Hormuz, and regional diplomacy — June 24, 2026

Al Jazeera — US and Iran at odds over nuclear oversight and the Strait of Hormuz — June 24, 2026

RFE/RL — Rubio concludes Gulf tour on freedom of navigation message — June 25, 2026

Secondary sources

The Guardian — Rubio faces Gulf allies on the ceasefire deal — June 23, 2026

ITV News — Rubio in the UAE to dispel skepticism on the Iran deal — June 24, 2026

Al Jazeera Inside Story — Has Rubio's Gulf tour reassured American allies? — June 25, 2026