Oil prices jumped more than two percent at the start of trading on Monday, with Brent crude moving back above $90 a barrel after U.S. forces carried out strikes on Sunday against two Iranian launch platforms on Iran's Lark Island in the Strait of Hormuz.
Crude price movements
Brent crude futures rose $2.22 or 2.52 percent to reach $90.32 a barrel by 22:02 GMT.
U.S. West Texas Intermediate crude settled at $85.41 a barrel, up $2.01 or 2.41 percent.
Strikes in the Strait of Hormuz
Prices rose after U.S. forces carried out strikes on Sunday against two Iranian launch platforms on Iran's Lark Island in the Strait of Hormuz, the first known U.S. strikes on Iran since late July.