Oil Prices Surge Over $4 to Five-Week High on U.S.-Iran Hostilities

Oil prices surged by more than $4 a barrel on Tuesday, settling at a five-week high as escalating military conflict between the United States and Iran heightened investor fears of major disruptions to global energy supplies.

Geopolitical Tensions Boil Over

The price spike followed confirmation from U.S. Central Command that it had launched new air strikes against Islamic Revolutionary Guard Corps (IRGC) targets in Iran. According to a statement posted on X, the strikes were a response to "recent attempted attacks by the IRGC against commercial shipping in the Strait of Hormuz and against American service members."

The action quashed hopes for de-escalation after an initial exchange of fire over the weekend and reports of two tankers being hit near the critical waterway. Ole Hansen, an analyst at Saxo Bank, noted the hostilities have "raised concerns about prolonged disruptions to energy flows through the Strait of Hormuz," a chokepoint for a significant portion of the world's oil.

Market Reaction and Price Levels

Reflecting the increased geopolitical risk premium, benchmark crude prices posted their strongest gains in weeks. The key price movements were:

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• Brent crude futures rose $4.16, or 4.6%, to settle at $94.65 a barrel.
• U.S. West Texas Intermediate (WTI) crude rose $4.46, or 5.2%, to settle at $90.22 a barrel.

According to Reuters, these were the highest settlement prices for Brent since July 24 and for WTI since July 23.

Broader Supply Concerns

The market is also contending with tightness in refined products. Global refinery disruptions have caused diesel prices to spike, with U.S. diesel futures hitting a 52-month high on Tuesday. The diesel crack spread, a key measure of refining profit margins, soared to a record high of around $107 a barrel, according to LSEG data.

Traders are also monitoring weekly U.S. oil inventory reports. Analysts polled by Reuters expect a crude drawdown of 0.8 million barrels for the week ended August 28, which would mark the first decline in five weeks.