Iran threatens Gulf exclusion zone as U.S. conflict escalates

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Iran raises Gulf pressure

Highlights

Iran plans a new restricted maritime zone in the Gulf.
Tehran says it used the Qassem Basir against U.S. vessels.
U.S. forces struck three Iranian oil tankers Saturday.
Houthi attacks in Saudi Arabia wounded 73 people.

Iranian officials said the planned restricted area would extend from the perimeter of the U.S. blockade into parts of the Gulf, while vessels entering it could face Iranian sanctions, Reuters reported. Tehran is also preparing maps for a new shipping corridor through the Strait of Hormuz, although it has not provided a timetable for implementing the measures.

Missile threats raise military stakes

The latest warnings follow another exchange of attacks over the weekend. U.S. forces struck three Iranian oil tankers on Saturday, while Iranian state media said Tehran deployed its Qassem Basir ballistic missile against several American vessels.

The U.S. military said its warships avoided the missile attacks. Iran describes the Qassem Basir as a more maneuverable weapon designed to operate against missile defenses and electronic warfare systems. Iranian media previously reported its combat use against Israel in June 2025.

Despite sustained U.S. strikes that have weakened parts of Iran’s conventional military infrastructure, Tehran retains missile and drone capabilities that can threaten ships and regional targets.

The conflict widened again Tuesday when the Iran-backed Houthi movement attacked several cities in Saudi Arabia. The Saudi-led coalition in Yemen said 73 people were wounded, adding to concerns that the six-month conflict could draw more Gulf states into direct confrontation.

Shipping becomes a central pressure point

Iran is increasingly linking military pressure with economic retaliation. Commercial traffic through the Strait of Hormuz has slowed again despite U.S.-led efforts to improve freedom of navigation through one of the world’s most important maritime energy corridors.

The strategy creates risks beyond the battlefield. Restrictions on commercial vessels can disrupt crude and liquefied natural gas exports from Gulf producers, adding a geopolitical premium to energy prices and increasing shipping and insurance costs.

Diplomatic tensions are spreading as well. Tehran criticized Canada after Ottawa backed sanctions and U.S., French, and British efforts to reopen the strait, further widening the group of governments involved in the dispute.

Regional escalation raises global economic risks

The combination of missile threats, restrictions on shipping, and Houthi attacks on Saudi Arabia increases the risk that the conflict will develop into a broader regional confrontation. Any further disruption to commercial traffic in the Persian Gulf could put additional pressure on energy supplies and raise transportation and insurance costs.

Oil markets are already reflecting that risk. Brent crude futures were trading at $98.64 a barrel, up 1.69%, while U.S. West Texas Intermediate futures climbed 2.86% to $94.10. The gains leave Brent close to the $100 threshold as traders assess the possibility of further disruption to Middle Eastern crude flows.

For Washington and Tehran, control over maritime access has become an increasingly important source of leverage as military pressure and economic sanctions continue without a diplomatic settlement. For global markets, the immediate concern is whether another escalation could further restrict energy exports and commercial navigation through the Gulf.

As we previously reported, the U.S. increases pressure on Iran as Hormuz risks persist.

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