Ras Tanura sits on Saudi Arabia's Gulf coast and anchors the kingdom's refining and export system, which makes any claimed hit on it a direct signal to the oil market. The Iran-aligned group has targeted Saudi energy infrastructure before, and the Saudi-led coalition has been fighting the Houthis in Yemen for more than a decade. This time the claim landed in a market already pricing in the aftermath of a US-Israeli war with Iran. The Houthis said on Tuesday they had attacked the refinery with a ballistic missile, and both Brent and West Texas Intermediate rose on Wednesday, CNBC reported.

The refinery claim was not an isolated event. The Houthis also claimed a drone strike on Abha International Airport, which Saudi Arabia did not immediately confirm, and on Wednesday morning the Saudi-led coalition said it had intercepted a ballistic missile the group fired toward Taif, The National reported. Both targets lie well inside the kingdom. The attacks bind the conflict in Yemen more tightly to the wider confrontation over Iran.

For importers, the question is whether supply disruptions are ending or merely pausing. Crude leaving the region is moving at close to prewar levels again, but the head of the International Energy Agency does not expect the market to regain its pre-conflict footing even next year and wants governments to put energy security first, according to Semafor. The Houthis have shown they can reach Saudi oil facilities. What remains unresolved is whether the wider war that gives those strikes their weight is winding down.