Brent crude futures were up $13.02, or 14%, at $105.71 per barrel at 0917 GMT, while US West Texas Intermediate (WTI) crude futures were ​up $12.16, or 13%, at $103.06.

In a whiplash session, Brent had earlier hit a high of $119.50 a barrel, indicating the biggest-ever ​absolute price jump in a single day, and WTI reached $119.48 a barrel.

Before the surge on Monday, ⁠Brent had already climbed 28% and WTI 36% over the last week.

The Strait of Hormuz, through which roughly one-fifth of the ​world’s oil and liquefied natural gas typically passes, is virtually shut.

Also boosting prices is the appointment of Mojtaba Khamenei to succeed his ​father Ali Khamenei as Iran’s supreme leader, signalling that hardliners remain firmly in charge in Tehran a week into its conflict with the United States and Israel.

The war could leave consumers and businesses worldwide facing weeks or months of higher fuel prices even if the conflict, which started on ​February 28, ends quickly, as suppliers grapple with damaged facilities, disrupted logistics and elevated risks to shipping.

US gasoline contracts surged to ​their highest since 2022 at around $3.22 a gallon, at a time when US President Donald Trump has told US consumers the impact on ‌their cost ⁠of living would be limited ahead of the mid-term elections in November.

Governments can release strategic petroleum reserves to counteract supply disruptions.

US Senate Democratic Leader Chuck Schumer called on Trump to make such a move and a French government source said on Monday that the Group of Seven nations would also discuss this.

Iraq’s oil production from its main southern oilfields has fallen by 70%, sources said, with crude ​storage having reached maximum capacity.

Kuwait ​Petroleum Corporation began cutting oil output ⁠on Saturday and declared force majeure on shipments, though it did not say how much production it would shut.

Analysts expect OPEC heavyweights United Arab Emirates and Saudi Arabia will also have to ​cut output soon as they run out of oil storage.

Saudi Aramco has offered more than ​4 million barrels ⁠of Saudi crude in rare tenders as its export routes are throttled.

In gas markets, giant liquefied natural gas exporter Qatar had already stopped production after attacks on key infrastructure.

A fire broke out in the UAE’s Fujairah oil industry zone, resulting from falling debris, with no injuries reported. ⁠

Saudi Arabia’s ​Defence Ministry said on X that it intercepted a drone heading to the Shaybah oilfield.

Refinery ​disruptions add to fuel supply cuts, with Bahrain’s BAPCO announcing a force majeure following a recent attack on its refinery complex. Saudi Arabia has already shut its ​biggest oil refinery.