The benchmark Brent crude oil price climbed on Tuesday amid uncertainty that a peace deal will be reached between the U.S. and Iran following strikes by the U.S. military.
Brent crude at last look gained 3.7% to US$99.70/barrel. There was no West Texas Intermediate settlement on Monday due to the Memorial Day holiday.
U.S. forces conducted strikes in southern Iran in signs of renewed tensions and the decreasing likelihood of a reopening of the Strait of Hormuz, Reuters said in a Tuesday report.
"While differences between the parties have narrowed, any eventual peace deal would likely lead only to a gradual reopening, meaning the current tight supply outlook could take months to normalize," Reuters quoted Ole Hansen at Saxo Bank as saying.