Bessent Threatens Oman Over Hormuz Tolling as Trump Warns of Retaliation Against 13 Nations

U.S. Treasury Secretary Scott Bessent on May 28 issued an explicit warning to Oman, stating that Washington would not tolerate any attempt to impose a tolling system on the Strait of Hormuz. "The United States Government will not tolerate any effort to impose a tolling system in the Strait of Hormuz. Oman, in particular, should know that the United States will deal firmly with any nation that helps Iran impose tolls on the Strait of Hormuz," Bessent wrote in a post addressed directly to Muscat. The statement marked a sharp escalation in the Trump administration's rhetoric against a country that has long served as a discreet diplomatic intermediary between Washington and Tehran.

Separately, reporting from Iranian state-aligned media cited President Trump, during a cabinet meeting at the White House on May 28, as claiming he had identified 13 countries as potential targets for U.S. military action. The reporting did not specify which nations were named in that list.

The Hormuz Chokepoint and the Tolling Question

The Strait of Hormuz is among the world's most strategically significant maritime corridors, carrying approximately 20 percent of global oil trade and roughly 20 percent of liquefied natural gas shipments. Any interference with freedom of navigation through the waterway — which separates Oman and Iran — carries immediate consequences for global energy markets. The geography makes it a natural lever: a narrow channel bounded by Oman's coastline on one side and Iran's on the other, with the Islamic Revolutionary Guard Corps Navy historically maintaining a persistent naval presence in adjacent waters.

The tolling concept has circulated in regional discussions for years. The underlying logic, from Tehran's perspective, mirrors arguments made by coastal states elsewhere: that those who benefit disproportionately from safe passage through a narrow waterway should bear a cost for the security infrastructure that makes it possible. Whether any formal tolling proposal has been put forward by Iran or Oman — or by any party acting in concert with Tehran — is not confirmed by available sources. What is clear is that the prospect has reached a threshold of concern in Washington sufficient to draw a direct, named threat from the Treasury Secretary.

Oman occupies a distinctive position in the regional architecture. Muscat hosts Track II diplomatic channels that Western governments have historically valued, maintains its own independent foreign policy tradition, and is party to a U.S.-Oman Free Trade Agreement renewed under the current administration. A public threat from a senior U.S. cabinet official, addressed by name to a longstanding treaty ally, represents a meaningful break from the usual diplomatic register.

Regional Counter-Narratives

Iranian state media framed the developments as confirmation of an aggressive American posture toward the region. Fars News International, a news agency with ties to the Islamic Revolutionary Guard Corps, reported on May 28 that the U.S. Treasury Secretary had "directly threatened Oman" with the Hormuz tolling statement. Jahan Tasnim, another Iranian state-linked outlet, cited reporting that President Trump had threatened military action against one of 13 nations — framing the statement within a broader pattern of coercive diplomacy.

The framing from Tehran-adjacent sources places the tolling threat in the context of ongoing nuclear negotiations, which have stalled repeatedly since the collapse of the Joint Comprehensive Plan of Action in 2018. Under that reading, the Hormuz ultimatum is less a discrete trade-policy dispute and more an instrument of pressure designed to deny Iran leverage at the negotiating table — a position the administration has not publicly disavowed. It is a consistent application of the "maximum pressure" framework, but one that carries distinct risks when directed at a mediating third party rather than at Iran itself.

Regional analysts have long noted that Oman's diplomatic utility to Washington depends precisely on Muscat's perceived independence. A public ultimatum may inadvertently shrink that space, pushing Oman toward a more reflexive alignment with Gulf Cooperation Council partners — or toward the kind of hedging that benefits neither Washington nor Muscat. The available sources do not contain a response from the Omani government, and Oman's Foreign Ministry had not issued a public statement as of 18:00 UTC on May 28.

The Structural Logic of Coercive Signaling

The episode sits within a broader pattern of the administration using explicit economic and military threats as a first-mover instrument rather than a last resort. The Treasury Secretary's post, delivered on social media, was calibrated for audience beyond Muscat: the language was designed to be read by financial markets, by Gulf allies, and by Tehran itself. Whether that broadcast quality serves long-term diplomatic interests is a separate question from whether it achieves short-term deterrence.

The Strait of Hormuz represents what strategists sometimes describe as a chokepoint — a geographic constriction through which a disproportionate share of global commerce flows and where a small number of actors hold disproportionate leverage. The United States has historically treated freedom of navigation through such corridors as a non-negotiable interest, backed by a sustained naval presence and a long-standing international legal framework. The Hormuz Maritime Security Initiative, involving coordinated naval patrols with Gulf partners, reflects that posture.

What is newer is the specific instrument being wielded. Treasury — rather than the State Department or the Pentagon — issued the public ultimatum. That choice carries its own signal: it places the warning in the register of financial coercion, suggesting the administration is prepared to use secondary sanctions or banking restrictions against a NATO-designated Major Non-NATO Ally. The message to third-country financial institutions considering any involvement in a Hormuz tolling mechanism is implicit.

The reference to 13 countries in the cabinet meeting reporting introduces a separate dimension. The number itself is not unprecedented — U.S. administrations have, in various contexts, identified lists of states of concern — but the combination with Hormuz-specific threats and a Treasury ultimatum creates an impression of coordinated pressure across multiple vectors simultaneously.

What Remains Unresolved

The sources available at time of publication do not include a response from the Omani government, a confirmation or denial from Tehran regarding any current tolling proposal, or a statement from the U.S. State Department or National Security Council contextualizing Bessent's remarks. The cabinet meeting reporting relies on Iranian state-adjacent outlets, which carry their own editorial agenda and whose accounts of White House private deliberations should be treated with appropriate caution. The specific countries allegedly named on Trump's target list remain unspecified across all available sources.

It is also not possible, from the available record, to determine whether any party has formally proposed a Hormuz tolling regime, or whether the threat reflects a projection of intent based on intelligence assessments. The difference matters: a threat in response to an existing proposal is coercive diplomacy; a threat in response to a speculative future scenario is preventive signaling. Both carry risks, but of different kinds.

Muscat's silence in the immediate aftermath is itself a data point. Oman's default posture in moments of external pressure is typically measured non-response — a diplomatic tradition rooted in the country's long experience navigating between larger powers. Whether that restraint holds through a sustained U.S. pressure campaign is the more consequential question for the bilateral relationship over the coming weeks.

This publication's coverage of the Hormuz ultimatum foregrounds the threat's implications for Omani sovereignty and the structural incentives driving U.S. coercive signaling — framing that differs from wire reporting, which has tended to treat the episode primarily through a nuclear negotiations lens.

Wire provenance

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

• https://t.me/Middle_East_Spectator
• https://t.me/FarsNewsInt
• https://t.me/JahanTasnim
• https://t.me/GeoPWatch