Brent tops $90 as U.S.-Iran fighting raises Hormuz supply fears

Brent crude rose above $90 a barrel on Monday as continuing fighting between the United States and Iran sharpened market concern over energy shipments through the Strait of Hormuz. CNBC reported that Brent crude for September delivery gained about 2.77%, while U.S. West Texas Intermediate for August delivery advanced roughly 2.4% to $84.49.

The move reflected a higher risk premium in crude futures after another round of U.S. military action and fresh American casualties. Futures contracts price barrels for delivery in a specific month, so traders use them to express expectations about supply, demand and disruption risks during that period.

The U.S. military confirmed that a third American service member had been killed in recent operations, according to CNBC. Investigators also recovered unidentified remains near the location of an Iranian attack in Jordan that had earlier left two U.S. personnel dead and another missing.

U.S. forces have begun a ninth consecutive night of strikes against Iranian targets, U.S. Central Command said in a statement on X. Centcom said the campaign was intended to reduce Iranian military capacity used against shipping and mariners moving through the Strait of Hormuz.

The waterway is one of the most closely watched routes in global oil markets because concerns over its security can affect expectations for Gulf exports. When traders see a higher probability that tankers could face delays, damage or restrictions, benchmark prices can rise even before a confirmed physical shortfall appears.

Centcom describes targets

Centcom said U.S. strikes had hit Iranian coastal surveillance and air-defense systems, maritime assets, and missile and drone storage sites. The command also said American forces targeted Islamic Revolutionary Guard Corps units tied to the July 17 attack on U.S. personnel in Jordan.

The latest operations extend a period of direct U.S.-Iran hostilities that has put commercial shipping and regional military infrastructure under closer scrutiny. CNBC reported that the market response centered on the possibility of disruption to energy flows through the Strait of Hormuz, rather than on any confirmed halt to exports.

David Roche of Quantum Strategy said in a Monday note that the global crude market had tightened as Gulf exports declined. Roche wrote that, at the current rate of inventory drawdown, crude stocks would become tight in September and that even the U.S. would face stress.

Roche also said Brent could move into a $95 to $105 a barrel range, according to CNBC. That assessment is a market view from Quantum Strategy and not a confirmed outcome.

The price gains put Brent back at a level that can feed into inflation expectations, refining margins and fuel costs if sustained. For policymakers and companies exposed to energy inputs, the immediate issue is whether military escalation continues to threaten shipping routes or settles before physical supply is materially affected.

This story draws on original reporting from CNBC.