Iran and Oman Near Bilateral Hormuz Deal as Tehran Denies US Role in Talks

What Happens Next

• →A bilateral Iran-Oman Hormuz agreement excluding Washington undermines US strategic positioning in the Gulf, pressuring the Pentagon to expand naval presence or negotiate a parallel multilateral framework to preserve freedom-of-navigation enforcement.
• →Iran's proposed legislation banning US- and Israeli-linked vessels from the strait forces major tanker operators and insurers to restructure fleet registrations and routing, raising war-risk insurance premiums by an estimated 15-30% for Gulf-transiting cargo.
• →Gulf Cooperation Council members—particularly Saudi Arabia and the UAE—face pressure to choose between endorsing an Iran-Oman framework that legitimizes Iranian maritime authority or aligning with Washington's opposition, fracturing regional diplomatic cohesion.

Near-term: Within 1-3 months, tanker operators and marine insurers reprice Gulf transit risk as Iran's ship-ban legislation advances, increasing spot freight rates for Middle East crude shipments and widening Brent-WTI spreads. Long-term: Over 2-5 years, sustained uncertainty over Hormuz governance accelerates buildout of bypass pipeline capacity (e.g., UAE's Habshan-Fujairah expansion) and drives Asian importers to lock in long-term supply contracts with non-Gulf producers such as Guyana, Brazil, and West Africa.