Summary Oil prices jumped more than 4% as renewed U.S.-Iran strikes and threats to shipping through the Strait of Hormuz raised fears of global supply disruptions.
SINGAPORE/PERTH (Reuters) - Oil prices surged over 4% on Monday as energy shipments via the Strait of Hormuz remained under threat, with the U.S. and Iran announcing renewed military strikes.
Brent crude futures climbed $3.10, or 4.08%, to $79.11 by 0325 GMT, while U.S. West Texas Intermediate crude rose $2.95, or 4.11%, to $74.36 a barrel.
U.S. forces completed another wave of strikes against Iran on Sunday, hitting dozens of targets at multiple locations with precision munitions, the Central Command said. Iran's Revolutionary Guards said on Monday they attacked U.S. military bases in Kuwait and Bahrain.
Six vessels transited the strait on Sunday, ship-tracking data from Kpler showed, the lowest number in five weeks.
The escalating attacks cast further doubt on the future of an interim U.S.-Iranian agreement signed last month that aimed to reopen the strait and end the war after a further 60 days of negotiations.
Following the agreement, global oil supply rose by 4.1 million barrels per day in June, but remained 9.4 million bpd below pre-war levels, the International Energy Agency said in its monthly report on Friday.
"Hopes of a relatively quick resolution to the recent skirmishes may be in doubt after tension escalated over the weekend," ANZ analysts said in a note.
IG market analyst Tony Sycamore said the relatively tame rise in oil prices suggested the market was taking the view that the current flare-up represented an escalation within a fragile truce and fell well short of a complete collapse of the ceasefire.
"How accurate that view is remains to be seen," he said in a note.
