Oil is back in triple digits with a vengeance. Brent crude touched $110 a barrel on Friday for the first time since May, settling at $109.86 — its highest close in nearly five months. U.S. benchmark WTI closed above $101 for the first time since September. For the week, Brent gained almost 5% and WTI more than 10%. Here is what is driving the rally — and why it might not stop here.

Reason 1: The Middle East is heating up again
The biggest driver is fear of supply disruption. Attacks around the Strait of Hormuz have surged over the past 10 days, with Iran saying it is stepping up strikes in response to a U.S. blockade of its ports and tougher sanctions imposed last month. A Saudi-led coalition said it intercepted a ballistic missile aimed at the Red Sea city of Yanbu — a port Saudi Arabia relies on to bypass the Strait of Hormuz and keep oil flowing. Analysts at Kpler reported that intensified Iranian attacks have driven Gulf crude flows sharply lower, and warned of a slow, uneven recovery without a political deal.
Reason 2: Ukraine's strikes on Russian refineries
A second pressure point is Russia. Ukrainian attacks on Russian oil infrastructure — including a reported strike on the Ryazan refinery — have investors questioning how much diesel Russia can actually supply to the global market. Diesel and gasoline futures in New York are trading at their highest seasonal levels ever, and U.S. lawmakers have moved to block a deal to release Russian diesel stockpiles, adding to the uncertainty.
Reason 3: Inventories are shrinking
Physical supply looks tight too. U.S. crude inventories fell by more than 8.5 million barrels in the week to October 9, far exceeding expectations. Emergency stock releases have not calmed the market — because this is not a shortage of oil in the ground, it is a shortage of oil that can move safely to buyers.
What it means — and the counterargument
Higher crude feeds straight into fuel prices, freight costs and inflation, just weeks before America's November 3 midterm elections. Energy stocks are already rallying hard. But some analysts urge caution: Middle Eastern exports and global inventories still look stable in places, and they argue prices above $100 are stretched relative to fundamentals. In other words, this rally is priced on risk, not on barrels. If the risk fades, prices could fall fast — and if it escalates, $110 will not be the ceiling.
For context on how the Hormuz standoff got here, read our earlier explainer on Iran's new shipping-attack tactics and our coverage of the strikes on Ukraine's energy grid.
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