Iran Expands No‑Go Zone Around Hormuz, Targets Passing Vessels

On Wednesday Tehran announced it had fired on more than a dozen merchant ships that were trying to thread the narrow passage of the Strait of Hormuz. The Iranian navy said the vessels were "violating" a maritime exclusion area that it has enforced for months, and that the attacks were a legitimate response.

What’s new this time, officials in Tehran added, is that the no‑go zone is being pushed farther out into the Gulf, beyond the traditional choke‑point. In practical terms that means any ship that comes within roughly 30 nautical miles of the strait could now be considered a target, unless it has explicit permission from Iran.

The renewed hostilities have already sent a ripple through global oil markets. Brent crude, which had been flirting with the $95 mark, jumped past $100 a barrel within hours of the news. Traders pointed to the expanded threat to shipping as the main driver, fearing that a broader blockade could choke off a sizeable chunk of the world’s oil supply.

The United States, which has been shadowing Iranian naval movements for weeks, responded with a warning of its own. A senior Pentagon official said Washington is ready to enforce a counter‑blockade of Iranian ports if Tehran’s actions jeopardise the free flow of commerce. The rhetoric has grown sharper, with both sides exchanging threats that sound eerily familiar to the early days of the 2019‑2021 tensions.

For the shipping industry, the message is clear: the Hormuz corridor, already one of the world’s most precarious maritime routes, has become even riskier. Companies are scrambling to reroute vessels, negotiate safe‑passage guarantees, or, where possible, shift cargo to over‑land pipelines.

Meanwhile, regional actors are watching closely. Saudi Arabia, the United Arab Emirates and other Gulf states have all issued statements condemning the escalation, calling it “dangerous” and “destabilising” for the Middle East. Iran, for its part, frames the move as a defensive measure against what it calls “unjust” interference by Western powers.

As the standoff drags on, analysts warn that the oil market could see further volatility. If the new exclusion zone starts to bite, we could see a sustained rise in prices, putting additional pressure on economies already coping with high energy costs.