Oman and Iran Form Joint Working Group on Strait of Hormuz

Oman’s Foreign Ministry announced Tuesday that Muscat and Tehran have agreed to establish a joint working group to negotiate the future management of navigation in the Strait of Hormuz, according to an Omani government statement carried by Anadolu Agency. The announcement follows talks in the Omani capital during a visit by two of Iran’s most senior officials: Parliament Speaker Mohammad Baqer Ghalibaf and Foreign Minister Abbas Araghchi.

The Iranian delegation met with Omani Sultan Haitham bin Tariq during the Muscat visit. The joint presence of Araghchi alongside Ghalibaf marks the first reported appearance in the Oman channel of both Iran’s executive and parliamentary leadership on the Hormuz governance question in the same delegation.

The announcement is the first named institutional mechanism for the Hormuz governance question since the Versailles memorandum of understanding was signed June 18. The framework’s Hormuz provisions, as described in White House readouts and in Foreign Policy’s pre-signing summary of the draft text, require Iran to permit transit and commit Washington to a sanctions-waiver schedule running against a 60-day window. The governance structure for what comes after that window has not appeared in the framework’s public terms.

What the Working Group Formalizes

The announcement formalizes a channel that has been operating informally. Oman’s Foreign Minister Badr Albusaidi reaffirmed his country’s commitment to “toll-free and safe passage” through the strait earlier Tuesday following direct discussions with senior Iranian officials. That statement was Albusaidi’s description of what Iranian officials communicated in those meetings. The joint working group is the institutional form Tuesday’s talks produced.

Araghchi’s presence is the substantive addition the announcement carries beyond Ghalibaf’s Tuesday public statements. Ghalibaf claimed this morning that the administration of the Strait “will never return to the pre-war situation” — a governance assertion from a Parliament Speaker whose portfolio does not include the operational instruments through which a governance change would be implemented. The Foreign Ministry, which Araghchi leads, does include those instruments: treaty interpretation, diplomatic communication with transit users, and the formal frameworks through which Iran’s maritime governance positions acquire legal standing with counterparties.

The joint working group puts Iran’s Foreign Ministry inside the governance conversation for the first time in the public record. Whether the working group’s mandate extends to the IRGC’s Saturday closure declaration — which named no enforcement timeline, no triggering condition, and no vessel category exempt from its “all vessels” language — the Omani Foreign Ministry statement does not address.

The Parallel Diplomatic Track

Ghalibaf and Araghchi’s visit to Muscat arrived the same day US Secretary of State Marco Rubio was conducting a separate diplomatic tour of Gulf partners. The Guardian reported Tuesday that Rubio was meeting with officials from the UAE, Kuwait, and Bahrain to reassure them that Washington remains committed to their security and that the Versailles ceasefire deal would not embolden Tehran. Qatar, which played a central role in brokering the agreement, did not appear on the same reassurance schedule.

The two diplomatic tracks describe a post-Versailles landscape in which both primary signatories are separately managing allied concerns about what the framework commits them to. Iran is formalizing its Hormuz governance claim with Oman. The United States is reassuring Gulf partners whose security guarantees were not enumerated in the framework’s known terms. The tracks are running simultaneously and are not coordinated with each other in any publicly recorded formulation.

The Gulf division Rubio’s tour reflects is also the context in which the joint working group’s mandate will be read by transit users. An Oman-Iran joint working group on Hormuz navigation governance means something different for a UAE shipping operator, whose government is on Rubio’s reassurance list, than it does for Qatar, whose government helped design the framework that produced the channel.

What the Enforcement Gap Carries

The joint working group does not address the IRGC’s standing closure declaration, which has been on the record since Saturday without an enforcement action, a vessel turned back, or a Lloyd’s Joint War Committee additional-perils designation. The three-day non-enforcement record is a file the Oman-Iran working group now sits alongside, rather than replaces.

Whether the working group’s mandate will address the IRGC’s declared posture, or operates in parallel as a separate channel managing the post-60-day governance question independently of the corps’ standing declaration, is not stated in the Omani Foreign Ministry announcement.

Indian Oil Corporation’s failed tanker tender — reported by Reuters on Tuesday, with IOC receiving no bids from shipowners willing to charter vessels for Persian Gulf crude liftings through Hormuz — is the commercial signal the working group’s announcement lands against. The declaration is on the record. Vessels are transiting. Major tanker operators are not yet willing to price out the risk in a tender.

What Wednesday Inherits

The joint working group gives the Versailles framework a concrete institutional mechanism it did not publicly carry before Tuesday’s Muscat announcement. The desk’s four-day framework assessment traced the enforcement architecture’s central gap: instrument signed, text private, enforcement body unnamed. The Oman-Iran joint working group is the first named body on the governance side of that gap.

What it does not name is the verification mechanism, the enforcement sequence if the working group’s negotiations stall inside the 60-day window, or the relationship between the working group’s mandate and the IRGC’s closure declaration. Those questions remain inside the verification gap the desk’s Tuesday diplomatic review confirmed both Washington and Tehran find useful to preserve in the framework’s first full week.

The freight tape on Tuesday shows tankers transiting. The joint working group on their governance is meeting. Both conditions are simultaneously true.