The US military struck three Iranian oil tankers for the first time, escalating the conflict in the Strait of Hormuz from "bombing facilities" to "cutting off transportation."
The US-Iran military conflict took a dramatic turn this week, with the US military shifting its targets from coastal military facilities and infrastructure to oil tankers at sea for the first time. As a result, the risk of supply disruptions in the Strait of Hormuz has moved from theoretical expectation to reality, and the logic of global oil pricing is facing a reassessment.
According to CCTV International News, the U.S. Central Command issued a statement on September 5 stating that "after the Iranian Islamic Revolutionary Guard Corps launched ballistic missiles at two U.S. warships patrolling regional waters, U.S. Central Command forces struck three Iranian oil tankers." The U.S. Central Command subsequently issued a strongly worded statement: "We will not hesitate to defend U.S. forces and, if necessary, destroy Iran's limited and exposed oil convoy."
This marks the first time since the conflict began in February that the US military has targeted oil tankers in transit, signifying a formal escalation of the US-Iran confrontation from "targeting production capacity and facilities" to "targeting transportation routes." Market focus has thus shifted from "how much Iran will cut production" to "whether the Strait of Hormuz can be safely navigated," putting pressure on the pricing frameworks of both oil prices and shipping insurance.
Earlier that day, Iranian media reported that an oil tanker near Kharg Island had been hit by a US missile, and evacuation efforts were underway with no casualties reported. The previous day, Tehran reportedly fired anti-ship missiles at vessels in the Strait of Hormuz. This increased activity targeting maritime routes continues to drive up shipping risk premiums in the region, and the Strait of Hormuz is facing its most severe security test since the start of the conflict.
A qualitative change in the targets: from destroying facilities to targeting oil tankers.
Over the past week, the U.S. military has focused its strikes on Iranian Islamic Revolutionary Guard Corps (IRGC) air defense positions, mine-laying facilities, radar systems, maritime assets, and communication sites, as well as ground facilities at oil export hubs such as Larak Island and Kharg Island. Last Sunday, CENTCOM conducted a "limited and precise operation" against Iranian mine-laying forces in the Strait of Hormuz; on Tuesday, a new round of strikes was launched against IRGC air defense positions and mine-laying facilities.
This direct strike on three oil tankers expands the target from static military assets to dynamic transportation vehicles. The US stated that the trigger was Iran's ballistic missile launch at two US Navy warships. CENTCOM's public warning to "destroy the Iranian oil fleet if necessary" further indicates that the US intends to include Iran's energy export capabilities within its strike scope. Compared to previous damage to infrastructure, direct strikes on transport ships have a more immediate and direct impact on Iran's oil export capabilities.
The suspension of navigation has become a reality: the safety of passage through the strait has become the core variable.
The Strait of Hormuz carries approximately 20% of global crude oil shipments, making it a crucial waterway for global energy supply. Previously, market pricing in the conflict primarily focused on Iranian production losses and infrastructure damage. Now, with direct attacks on oil tankers, the risk has spilled over to the passage itself, and a complete disruption of shipping is no longer a hypothetical scenario.
According to Iran's Fars News Agency on the 5th, multiple explosions were heard in the waters near Kharg Island, and an Iranian oil tanker was reportedly hit by a US missile. The evacuation of the crew is underway, and there are currently no reports of casualties. The previous day, Tehran reportedly launched anti-ship missiles at vessels in the Strait of Hormuz. While Iranian media and the US military differ in their accounts of the number and specific location of the oil tankers, both sides point to the core fact that the tanker was attacked.
Iran responded immediately. According to the Islamic Republic News Agency (IRNA) on the 6th, the Revolutionary Guard's public relations department issued a statement saying that the Revolutionary Guard Air Force launched multiple ballistic missiles, striking a US aircraft carrier and a destroyer, stating that the two US warships were "forced to withdraw from the conflict zone after suffering losses." This intense exchange of fire over maritime traffic lanes signifies that the Strait of Hormuz is facing its most severe security test since the outbreak of this round of conflict.
Shift in crude oil pricing logic: Can geopolitical premiums continue?
For the crude oil market, the core issue is no longer "how much oil Iran can produce," but rather "whether this oil can be transported out." If the crackdown on oil tankers spills over to the international commercial shipping fleet, shipping insurance pricing will face continued upward pressure, which will in turn affect shipowners' route choices and overall logistics costs.
Amid escalating tensions, oil prices were already high: WTI crude oil stabilized around $91 per barrel after rising approximately 9% over three consecutive days, while Brent crude settled below $96. Market analysts point out that the latest round of escalation may continue to support oil prices, but whether the US and Iran can find a way to "step down" in negotiations will determine the sustainability of the geopolitical risk premium.
Key points to watch include: whether the US military will systematically expand its strikes against Iranian oil tankers , and whether there will be substantial changes in the passage arrangements for international commercial oil tankers in the Strait of Hormuz and shipping insurance rates .
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