US warships escort 18 million barrels through Hormuz in single day

The latest convoy operation reinforces a theme already visible in Wednesday's oil market, where prices have reflected a growing acceptance that alternative supply routes can maintain crude flows despite the conflict. With 18 million barrels moved in a single escorted convoy, compared with the pre-war daily average of roughly 20 million barrels through the strait, US naval activity appears to be restoring near-normal throughput levels even as Iran continues to challenge control of the waterway. That development introduces a bearish factor for the geopolitical risk premium priced into Brent and WTI, as it weakens the disruption narrative that has propelled this week's price advances. Yet the qualification carries as much weight as the main statistic: shippers remain largely unconvinced that the US can keep the escort system running over time, and energy companies are still reluctant to send tankers through the strait even with military protection. This divergence between official flow numbers and private sector caution is likely to sustain a geopolitical premium in prices for now, even if the physical barrels are getting through.

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The United States is now escorting oil shipments through Hormuz at volumes close to pre-war levels, even as shippers remain cautious and Iran continues its attacks.

Summary:

• On Tuesday, the US military escorted 40 commercial vessels carrying approximately 18 million barrels of oil through the Strait of Hormuz, described by officials as a wartime high, according to CNN citing two US officials.
• Before the war began roughly six months ago, about 20 million barrels a day passed through the strait, meaning Tuesday's escorted volume approaches pre-war throughput.
• US forces employed air, sea and space assets during the operation, intercepting and destroying an anti-ship cruise missile and repelling multiple waves of Iranian drone attacks.
• The operation fits the Trump administration's strategy of striking targets near the strait, escorting commercial traffic and maintaining a naval blockade of Iranian ports as part of a broader maximum pressure campaign.
• Treasury Secretary Scott Bessent had already signaled the trend earlier in the week, stating that Monday's flow through the strait hit a wartime record above 17 million barrels per day.
• US officials described the strait as a depreciating asset for Iran, arguing that sustained flow through the waterway shows Iran's control over the chokepoint is diminishing.
• Despite the escort success, shippers remain broadly skeptical that the US can sustain this system, and energy firms are still wary of routing tankers through the strait even with military protection.
• Officials do not expect a rapid resolution to the broader conflict.

On Tuesday, the US military escorted 40 commercial vessels carrying roughly 18 million barrels of oil through the Strait of Hormuz, marking a wartime high, as Iran and the United States exchanged a fresh round of strikes, CNN reported, citing two US officials familiar with the operation.

The scale of the escorted volume carries significance in context. Before the war erupted approximately six months ago, around 20 million barrels a day passed through the strait under normal circumstances. Tuesday's figure, achieved under active military escort and amid ongoing hostilities, thus represents a flow approaching pre-war levels, a notable recovery given that maritime traffic through the strait had reportedly fallen by as much as 70% in the conflict's early stages.

US forces used a mix of air, sea and space based assets during the operation, continuing to target Iran's ability to strike commercial vessels in the strait while simultaneously defending the convoy itself. Officials said forces intercepted and destroyed an anti-ship cruise missile and repelled multiple waves of Iranian drone attacks during the escort. The operation reflects a broader shift in US strategy in the conflict, which has increasingly prioritised striking targets around the strait, running escort operations for commercial shipping through the waterway, and maintaining a naval blockade of Iranian ports as part of what the Trump administration has called a maximum pressure campaign against Tehran.

The figures follow comments earlier in the week from Treasury Secretary Scott Bessent, who told CNBC that oil flows through the strait hit a wartime record above 17 million barrels per day on Monday. Bessent explicitly rejected the notion that continued Iranian attacks amounted to control of the waterway, and US officials have since characterised the strait as a depreciating asset for Tehran, arguing that the sustained recovery in flow undermines Iran's ability to meaningfully choke off the route despite ongoing attacks.

Even so, the operation highlights how contested the waterway remains. Iran is widely seen as retaining leverage through the credible threat of further strikes on commercial shipping, even where it lacks the capacity to fully close the strait. Shippers and energy firms have responded accordingly, with reporting indicating that many remain broadly skeptical the US can sustain a reliable escort system over time, and continue to show reluctance to route tankers through the strait even with military protection available. US officials, for their part, do not expect the underlying conflict to reach a rapid resolution, suggesting that this pattern of contested but partially restored flow, supported by direct military escort, is likely to persist as the near term operating environment for Gulf shipping.