Oil prices rose for a fourth straight day on Wednesday as tanker traffic through the Strait of Hormuz slowed amid escalating tensions between Iran and the United States.

Brent crude rose to $91.53 per barrel, while West Texas Intermediate (WTI) reached $85.47, according to the report.

The latest gains came after tanker-tracking data showed a further decline in shipping activity through the strategic waterway, raising fresh concerns about disruptions to global oil supplies.

Tensions between Washington and Tehran have also intensified, with both sides showing little indication of returning to negotiations. US President Donald Trump has said the Strait of Hormuz remains open, while Iran maintains that the waterway is closed.

Shipping activity has provided further signs of rising risks. Several tankers have reportedly turned around instead of continuing through the strait, while the United Kingdom Maritime Trade Operations said a cargo vessel was hit by an unidentified projectile while leaving the waterway.

The Strait of Hormuz is one of the world’s most important oil shipping routes, meaning prolonged disruption could have a significant impact on global energy supplies and prices.

June Goh, senior oil analyst at Sparta Commodities, said shipping risks were rising again amid continued attacks involving Iran and the Houthis around major regional chokepoints.

However, she noted that Gulf oil producers were looking at alternative export routes to move crude toward the Gulf of Oman, potentially reducing some of the supply risks if disruptions through Hormuz persist.