The Iran war is renewing concerns about the strategically vital Strait of Hormuz. A prolonged closure could sharply drive up oil prices, experts said.

The United States has not escorted any oil tanker through the Strait of Hormuz, the White House confirmed Tuesday, after the energy secretary deleted a post that had said so and Iran issued a denial.

Iran conflict halts Strait of Hormuz tanker traffic, risking global oil supply. Here’s why the narrow Gulf passage is vital and how it impacts crude prices.

Fearing the supply disruption, Brent crude climbed to $78.55 per barrel, up 7.8% from $72.87 The Strait of Hormuz is crucial as about 20% of global oil supply,that is around 15 million barrels per day, pass through it.

The Middle East conflict has stoked fears of prolonged disruption to global trade via key maritime corridors.

DUBAI, United Arab Emirates (AP) — The widening war in Iran has ground tanker traffic through the Strait of Hormuz to a halt and oil prices have been swinging sharply, highlighting the important role the narrow passageway plays in global energy supply.

The Strait of Hormuz is the narrow mouth of the Persian Gulf through which about a fifth of the world's oil passes.

Amid the war in the Middle East, Iran has been targeting key energy infrastructure across the region. Tehran is also threatening energy exporters, warning that tankers entering the Strait of Hormuz — a narrow,