Iran plan raises new Hormuz transit risks

Iran has circulated a draft plan, reported by state media, that would bar ships linked to the United States and Israel from transiting the Strait of Hormuz. The draft outlines a framework under which certain vessels associated with these countries would be prohibited from using one of the world’s most important maritime chokepoints.

The move comes amid heightened regional tensions and reflects Iran’s effort to formalize greater control over the types of traffic it will allow through waters that are central to global energy flows. While described as a draft, the proposal signals an intention to differentiate between countries deemed hostile and other users of the waterway.

In parallel with the draft restrictions, Iran and Oman are finalizing an agreement on proposed shipping routes through the Strait of Hormuz. Officials from both sides have worked toward agreeing geographic coordinates for a temporary corridor covering inbound and outbound traffic.

The talks include technical arrangements that would more clearly structure how vessels enter and exit the strait under joint understanding between Tehran and Muscat. The emerging framework involves distinct lanes for different directions of travel, with the objective of providing more predictable routing under a coordinated scheme.

Negotiations on these routes are described as advanced, with the geographic layout of the temporary corridor either agreed or close to being agreed. The arrangement is framed as a temporary measure, indicating that further steps will be needed before any long-term system is established.

A U.S. official has stated that any temporary routes introduced in the Strait of Hormuz must be without impediments. The official specified that this means no approvals, permissions, tolls or charges required for vessels to transit the designated lanes.

The United States views the Strait of Hormuz as an international waterway in which no single party controls the lanes or the basic ability of ships to pass through. This position sets a clear boundary against any measures that might introduce new administrative or financial barriers to commercial navigation.

The U.S. stance contrasts with Iran’s drive to codify specific rules for vessels linked to particular countries, highlighting a central point of contention over how far new routing agreements can go without infringing on widely recognized principles of free passage.

The combination of Iran’s draft plan to bar U.S. and Israeli ships and the nearing agreement with Oman on temporary routes underscores a changing operational environment for shipping companies. Carriers moving through the Strait of Hormuz face the prospect of more defined corridors, while also monitoring potential country-specific restrictions.

These developments matter for global energy and trade, as the strait carries a significant share of seaborne exports from the Gulf. The evolving rules and negotiations will shape how easily crude oil, petroleum products and other cargoes can move between producers and international markets in the coming months.