Oil Surges to $110 Amid Strait of Hormuz Attacks and Diesel Supply Concerns

Oil prices reached their highest levels in five months on Friday, Oct. 16, 2026, as investors reacted to renewed attacks on commercial shipping in the Strait of Hormuz and skepticism regarding a potential diesel supply agreement between the United States and Russia.

Benchmark Prices Hit Five-Month Highs

Brent crude oil, a primary global benchmark, surpassed $110 per barrel shortly after 2:30 p.m. ET. This marks the first time Brent has reached this level since May. U.S. crude oil, also known as West Texas Intermediate (WTI), jumped 3.5% to close at $101.41 per barrel. This was the first time WTI crossed the $100 threshold since September.

The rise in crude prices is expected to impact consumer costs. As of Friday morning, regular gasoline averaged $4.32 per gallon nationwide. Diesel futures also increased by more than 1%, continuing a trend where diesel costs have risen faster than regular gasoline in recent months.

Financial markets responded negatively to the energy price surge. The S&P 500 fell more than 1%, and the Nasdaq Composite dropped 2% by midafternoon.

Geopolitical Drivers and Supply Constraints

The upward trend in fuel prices began in the spring following attacks by the U.S. and Israel on Iran in late February, which led to the closure of the Strait of Hormuz. Recent escalations in the Russia-Ukraine war have further intensified pressure on diesel supplies.

Russia has historically been a major diesel exporter, but Ukrainian strikes on its energy infrastructure have significantly reduced its refining capacity. Conversely, Russian strikes have targeted energy assets in Ukraine. These disruptions have forced buyers to seek alternative fuel sources, but refineries in the U.S. and Europe are already operating at nearly maximum capacity.

On Friday, the Russian Defense Ministry stated that Ukraine had "attempted a massive attack on the Ryazan oil refinery," causing another Russian refiner to suspend some crude oil operations.

Political Responses and Legislative Uncertainty

President Donald Trump has focused on diesel costs due to their impact on inflation ahead of the Nov. 3 midterm elections. Trump has pressured allies to release oil reserves and signed an order easing regulations on off-road "red dye" diesel. When these measures did not lower prices, he moved to ease U.S. sanctions on Russia to allow President Vladimir Putin to release supplies.

However, no Russian diesel has been identified as reaching the global market as of Friday. The sanctions relief drew condemnation from lawmakers in both parties. A group of American lawmakers introduced a bill to block the deal, though it has little chance of passing the current Republican-controlled House.

Mason Mendez, a global real assets analyst at Wells Fargo, noted that the legislation adds to "growing doubts that a U.S. — Russia diesel deal will come to fruition." He added that investors remain concerned about "further military escalation in the Middle East" and that rebuilding depleted global inventories could keep energy prices elevated into 2027.

Why it matters

The surge in oil prices highlights the fragility of global energy supplies amid ongoing conflicts in the Middle East and Eastern Europe. With refineries at capacity and geopolitical tensions rising, consumers face continued pressure on gasoline and diesel costs, which are key drivers of inflation and a central issue in the upcoming U.S. midterm elections.

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Sources

• nbcnews.com: Oil surges to $110 per barrel for the first time since May
• aol.com: Oil surges to $110 per barrel for the first time since May - AOL

This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.