At $90.49 a barrel on Tuesday morning, Brent crude reached its highest price since June — a number that would have seemed alarming just weeks ago but now feels like a threshold, not a ceiling. The jump of 2.7% in a single session came as the United States carried out its ninth consecutive night of strikes against Iran, a pace of military action that has compressed what once seemed like a slow-moving geopolitical risk into something immediate and measurable.

The conflict's footprint has widened rapidly. Three US service members were killed in separate incidents in Jordan and Iraq. American strikes hit targets on Qeshm Island and at multiple sites in southern Iran, while Tehran broadened its own retaliation to include critical infrastructure across the Gulf — power stations and desalination facilities in Kuwait, as well as drone and missile attacks directed at US bases and regional allies. Iran also signalled a far more assertive posture over the Strait of Hormuz, claiming to have intercepted vessels attempting to transit the waterway.

Jim Reid of Deutsche Bank noted that the swift rise in oil prices and fresh waves of strikes underscore "how quickly the situation is deteriorating." What makes the current squeeze structurally distinct, however, is that the real constraint lies not in crude supply but in refining capacity — and its consequences fall most heavily on Europe. Analysts at Morgan Stanley, led by Martijn Rats, warned that European diesel inventories are expected to fall steadily from August, reaching approximately 299 million barrels in November. That would mark the lowest level for that time of year since at least 2015.