Iran-US Tanker Clashes Drive Brent Crude to Six-Week High Near $97, Rattling Global Energy Markets

Escalating hostilities between the US and Iran, centered on attacks targeting oil tankers in and around the Strait of Hormuz, have propelled Brent crude prices to their highest levels in six weeks, surpassing $97 per barrel amid fresh tit-for-tat strikes. US forces struck Iranian oil tankers over the weekend in retaliation for Iranian ballistic missile attacks on naval assets, while Iran claimed strikes on multiple vessels transiting unauthorized routes. These incidents have sharply reduced tanker traffic through the vital waterway, which handles roughly one-fifth of global oil supplies, with daily transits dropping to lows not seen since May.[1][2]

The price surge—Brent gained nearly 8% last week alone—reflects heightened fears of prolonged supply disruptions, building on a pattern of intermittent escalations throughout 2026 that have seen prices swing dramatically from wartime peaks above $120 to interim truces and renewed volatility.[3] Analysts note that even without a full closure of the strait, the cumulative effect of attacks, blockades, and restricted zones is tightening physical flows and pushing benchmarks higher.[4]

Short-term impacts are already rippling through global energy markets and to consumers via elevated fuel costs, higher refining margins, and increased volatility in related assets like bonds and equities. With US markets closed for Labor Day, trading volume remained thin, amplifying moves in oil and currencies such as the yen. Broader context includes ongoing central bank scrutiny of inflation data, where sustained high energy prices could influence rate decisions at the Fed and ECB.[5]

Deeper connections emerge in the interplay between these geopolitical frictions and secondary effects: reduced Chinese crude imports amid the volatility, potential hits on Saudi infrastructure, and diplomatic efforts like Iran-Oman talks on Hormuz shipping management. While prices remain below 2026 wartime highs, analysts warn of further upside risk toward $100 or beyond if tanker attacks intensify, underscoring the strait's outsized role in global supply security.