Oil Hits One-Month High as U.S.-Iran Clashes in Strait of Hormuz Threaten Supply

Oil prices climbed more than 2% to a four-week high on Tuesday, as escalating military actions between the United States and Iran in the Strait of Hormuz heightened investor fears of a significant disruption to global energy supplies. The increase follows a massive rally in the previous session, underscoring the market's sensitivity to geopolitical risk in the vital shipping chokepoint.

By 0051 GMT, Brent crude futures for international delivery rose $1.68, or 2%, to trade at $84.98 per barrel, according to Reuters. U.S. West Texas Intermediate (WTI) crude saw a similar jump, rising $1.65, or 2.1%, to $79.79 a barrel. The gains pushed prices to their highest level since a memorandum of understanding was signed by the two countries on June 17.

Escalating Military Actions

The price surge was triggered by a series of direct confrontations. The United States reinstated its naval blockade of Iranian shipping, a move confirmed by President Donald Trump. This was accompanied by a third consecutive night of U.S. strikes against Iran, according to U.S. Central Command.

Meanwhile, the UAE Ministry of Defence reported on Monday that two of its tankers were struck by Iranian cruise missiles in the Strait of Hormuz. The attack resulted in the death of one Indian crew member and wounded eight others. Separately, Iran's semi-official YJC news agency reported seven explosions in the port city of Bandar Abbas and two more on Kish Island.

Market Impact and Outlook

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The developments have injected a significant risk premium back into the oil market. Brent crude had already surged 9.6% in the prior session, its largest single-day gain since May 2020, signaling intense market concern.

"The latest escalation, including the U.S. reinstatement of the blockade and Iranian responses, has clearly injected fresh risk into the market," said Tim Waterer, chief market analyst at KCM Trade, in a comment cited by Reuters. He added that the competing objectives of both nations have made the supply outlook "highly uncertain."

Broader Regional Tensions

Concerns are also growing about a wider conflict. Yemen’s Houthi movement fired missiles at Saudi Arabia after accusing the kingdom of bombing an airport under its control. This raises the prospect of attacks on Saudi oil infrastructure, which could further constrict global supply.

"If the Houthis extend their attacks to Saudi’s crude products in the Red Sea, it could put (further) uncertainties on crude flows from the region," noted Simon Wong, a portfolio manager at Gabelli Funds. Away from the conflict, a preliminary Reuters poll indicated that U.S. crude oil stockpiles were expected to have fallen last week, a potentially bullish factor for prices.