World / Middle East

Two tankers are burning in the Strait of Hormuz, and nobody agrees whether it is open

Iran's Revolutionary Guards say two tankers hit naval mines after taking a route Tehran never authorised. Washington says ships are still getting through. Brent crude closing just short of 110 dollars a barrel suggests traders are pricing the risk, not the reassurance.

Strait of Hormuz · October 18, 2026

Iran's Revolutionary Guards Navy said on Saturday that two oil tankers caught fire after hitting naval mines while crossing the Strait of Hormuz. State media said each ship carried about two million barrels of crude, that both had switched off their positioning and radar systems, and that they had used a route Iran calls unauthorised. One vessel was left immobilised in the strait. Read that paragraph again and notice whose claim it is. Nobody outside Tehran has independently confirmed the mines, and the Guards are a party to this war, not a referee. The fires are real enough to move markets. The explanation is still a claim.

The geography is why a claim like this lands so hard. The strait is barely thirty miles wide at its narrowest point, and it is the only sea route out of the Gulf. In 2024 it carried about 20 million barrels of oil a day, roughly a fifth of the world's petroleum liquids consumption, according to the US Energy Information Administration. There is no spare strait waiting in reserve. When this one narrows, every alternative is a pipeline, a longer voyage or a smaller cargo.

The traffic figures show the squeeze is already happening, whatever label anyone puts on it. BBC Verify, working from UK Maritime Trade Operations incident reports, counted 12 ships attacked between October 5 and October 11, up from 10 the week before and a new high for this war. Shipping data from Kpler, cited by the BBC, put flows through the strait at about 12.6 million barrels a day on October 13, against roughly 17 million a day before the war. Earlier this week, Reuters reported, a container ship and a dry bulk carrier sank near the strait after being hit by projectiles.

Washington's answer is that the strait is open and escorted. US Central Command says commercial vessels are still moving through with protection from American forces and regional partners, that 97 percent of ships that sought to transit have passed through safely, and that US forces are clearing mines. Both things in this story can be partly true at once. A strait can be open in the sense that most ships get through, and closed in the only sense a shipowner cares about, which is that some ships do not, and nobody can say in advance which ones.

The market has already picked a side. Brent crude settled at 109.86 dollars a barrel on Friday, up 3.7 percent on the day, after touching 110 dollars during trading. That price is not a verdict on who is telling the truth about the mines. It is a verdict on uncertainty itself. Tehran says the strait is closed, Washington says it is open, and until an independent picture emerges, every captain sailing in tonight is weighing the same gamble, with the rest of the world paying a little more for fuel each time the gamble looks worse.