Global oil prices climbed above $100 a barrel on Wednesday for the first time since July, as escalating tensions between the United States and Iran heightened concerns over future energy supplies.

The increase followed an announcement Tuesday by U.S. Central Command that American forces had destroyed five oil tankers belonging to Iran’s Islamic Revolutionary Guard Corps.

Following the strikes, the IRGC issued a warning calling for all oil tankers operating in Kuwaiti and Bahraini waters to evacuate, adding to concerns about disruptions to energy shipments in the region.

Brent crude, the international benchmark for oil prices, rose about 2.7% on Wednesday, trading at approximately $100.57 a barrel for November delivery.

U.S. crude prices also moved higher, rising about 2% to roughly $95 a barrel.

The latest increase reflects growing market uncertainty over the impact of the U.S.-Iran conflict on oil supplies and shipping routes, as traders closely monitor developments that could further disrupt the flow of crude from the region.