The Oil Price Shock of 2026

October twenty-first, twenty twenty-six. The Iranian Revolutionary Guard says four tankers in the northern Gulf caught fire after being tracked by its forces. Three more hit mines just west of the Strait of Hormuz.

Mines. In twenty twenty-six. That's a sentence I didn't expect to hear.

Same day, a drone hits the Shaybah oil field in Saudi Arabia's Eastern Region. Two people dead. Another attack on King Fahd International Airport in Dammam kills two and injures eight. By Friday the twenty-third, Brent crude closes at one hundred sixteen dollars seventy-two a barrel, and touched over one hundred seventeen intraday.

Okay, but here's my first question. The conflict started back in February, right? Why does October set off the fireworks?

That's the loop I want you to hold onto. Because the thing that spiked prices in October was not a barrel that went missing. It was a sentence.

A sentence.

Hold that. First, the scale. The war erupted February twenty-eighth. Shipping through Hormuz nearly halted. The International Energy Agency called it the largest supply disruption in the history of the global oil market. Their executive director said the combined impacts were, quote, the greatest threat to global energy security in history.

That's a big claim from an agency that lived through the seventies.

The World Bank put a number on it. An initial reduction in global oil supply of about ten million barrels a day. Hormuz handles roughly thirty-five percent of global seaborne crude trade.

Ten million. So why wasn't it two hundred dollars a barrel? That feels like the dog that didn't bark.

This is the part I find genuinely surprising. Banca d'Italia did a study on it. The price rise was cushioned — high inventories, emergency reserves, trade flows getting reshuffled, and demand just... falling away because everything was expensive. The buffers worked.

So the boring stuff. Warehouses and strategic reserves.

The boring stuff saved you money. And then in June there was a memorandum of understanding between the US and Iran, announced June fourteenth. Hormuz partially reopened. By late June, the Chicago Fed notes, oil was back near pre-conflict levels.

So it was over. And then October just... un-ended it?

Right. Tehran said that if a new US-Israeli offensive launched, it would attack oil facilities, undersea cables, datacentres and AI facilities in the Gulf. US officials told the New York Times there were plans for fresh strikes after the midterms. Trump said Wednesday the US was not negotiating with Iran and something would happen, quote, fairly soon.

And that's your sentence. Nothing blew up, and the price moved anyway.

Brent gained six point two percent that week. Richard Hunter at Interactive Investor said what many had considered would be a brief conflict now isn't. That's the whole mechanism. Markets price the story, not the barrels.

Okay. So who actually eats this? Because I feel like "oil goes up" is where most coverage stops.

Start with fertilizer. More than thirty percent of global urea trade moves through Hormuz. The Middle East is about forty-two percent of global urea exports, twenty-seven percent of ammonia. J.P. Morgan found nitrogen fertilizer benchmarks up twenty-five to fifty percent from the end of February.

And it hit during planting season.

Northern Hemisphere planting, exactly. In Australia, twenty-seven percent of vegetable growers had already cut production because of fertilizer shortages. J.P. Morgan's Nora Szentivanyi said it could lift global food inflation temporarily to four or five percent — with a long lag.

So the war shows up in your groceries in twenty twenty-seven. That's horrible, actually.

And it's unequal in the cruellest way. The IMF points out food is about forty-three percent of consumption in low-income countries. Twelve percent in advanced economies. The World Food Programme said a prolonged conflict could push up to forty-five million more people into acute food insecurity this year.

What about flying? Did airlines get wrecked?

Depends entirely where you are. US carriers have under one percent of capacity exposed to the Middle East, so they mostly ate jet fuel costs. In mid-March, fares on Asia–Europe routes were up around one hundred seventy-six percent week-over-week.

A hundred and seventy-six percent in a week?

Airspace closures. And then there's the quiet stuff — about half of global seaborne sulphur goes through that strait, and five million tonnes of aluminium from Gulf smelters.

And the US economy overall?

The Chicago Fed modelled it: eighty-one to one hundred sixty-six basis points off growth in twenty twenty-six, mostly through investment, not consumer spending. Much smaller than nineteen seventy-nine to eighty. Indermit Gill at the World Bank put it best — "war is development in reverse."

So the payoff on your loop is kind of unnerving. Nothing physically changed in October.

Nothing did. Same barrels, same ships. What changed was how long everyone thought it would last. And the price of your diesel, your flight, your bread, is mostly a bet on that.

A global economy running on a guess about next month.

Thirty-five percent of the world's seaborne oil goes through a channel you could cross in an afternoon. We just keep agreeing not to think about it.