Crude futures advanced in midday trading on Tuesday as intensifying tit-for-tat between the US and Iran and fresh threats to key Middle Eastern energy chokepoints heightened concerns over potential supply disruptions.
Front-month West Texas Intermediate crude futures rose 2.4% to $85.25 per barrel, while Brent futures climbed by 2.3% to $91.25/bbl.
Saxo Bank strategists said that WTI settled near $83/bbl on Monday, its highest close since mid-June, after swinging through a five-dollar range.
On Monday, the US military said that it launched another round of strikes on Monday night, targeting Iranian military command centers, launch sites and air defenses, to "further degrade" Tehran's capabilities to attack ships in the Strait of Hormuz.
The tenth round of air strikes follows President Trump's vow that Iran "will pay" for killing American soldiers.
Iran, in response, said it struck two oil tankers in the strategic waterway, as well as US military assets in Bahrain, Kuwait and Jordan, according to Iranian media reports.
Kuwait said that multiple crew members were injured in Iranian strikes on a Kuwaiti tanker passing through the Hormuz on Monday night.
According to a Kuwait Ministry of Foreign Affairs' statement on Tuesday, the country renewed its demand for Iran to immediately cease its illegitimate attacks, emphasizing Kuwait's reservation of its right to take necessary measures, and holding Iran fully responsible for this aggression and its ongoing assaults against Kuwait.
The UK Maritime Trade Operations said two vessels reported being struck by unknown projectiles in and near the Strait.
Soojin Kim, research analyst at MUFG, said that risks to regional energy supplies remain elevated as attacks on vessels in the Hormuz disrupted shipping traffic, while Yemen's Houthis threatened Saudi maritime exports through the Red Sea.
Meanwhile, two tankers that loaded Saudi crude bound for China and India this week reportedly made U-turns and were headed toward the Suez. Kpler said in a post on X that the diversions could be an early indication of broader changes in tanker trade flows.
The course reversal comes a day after Yemen's Houthis threatened a maritime embargo against Saudi Arabia, warning that any further escalation by Riyadh would be met with a broader response.
On the supply front, the International Energy Agency said on Monday that it is "closely monitoring the situation in oil markets" as escalating hostilities in the Middle East increase concerns over security of supplies.
IEA executive director Fatih Birol said that markets "continue to benefit from several cushioning factors," including significant supplies from Persian Gulf producers such as Saudi Arabia and the UAE.