Oil prices gave up early gains on Monday as stalled U.S.-Iran talks revived concerns over prolonged Middle East tensions, but the absence of major supply outages limited upside.

Brent crude futures rose ​as much as 1% to $89.40 per barrel but were last trading dow ​24 cents at $89.28 by 0620 GMT. The U.S. West Texas Intermediate crude futures fell ⁠67 cents to $81.74 a barrel.

Both contracts gained more than 5% last week following attacks ​on tankers operated by Abu Dhabi National Oil Company in the Hormuz strait ​and on a Saudi Aramco refinery.

“Oil prices have now rebounded almost completely from the lows seen in early August, as hopes for a more permanent resolution between the U.S. and Iran have faded ​and geopolitical risk premiums have returned to the market,” said Priyanka Sachdeva, head ​of market insights for Phillip Nova in Singapore.

Over the weekend, Iranian Foreign Minister Abbas Araqchi ‌said Iran ⁠had not decided to resume talks with the U.S. while U.S. President Donald Trump urged Americans to accept slightly higher gasoline prices while the conflict continues.

“However, I see limited upside from here unless we get clear evidence of renewed aggression in the ​Strait of Hormuz, particularly ​material damage to ⁠tankers or oil infrastructure,” she said.

Shipping through the Strait of Hormuz slowed over the weekend, data showed on Monday, following attacks ​on tankers. Five commodity vessels transited the strait on Saturday, ​with none ⁠registered for Sunday, ship-tracking data from Kpler showed, versus 31 for the prior weekend.

The United Arab Emirates accused Iran of attacking a third vessel operated by ADNOC that was ⁠transiting the ​strait on Friday, the Emirati state news agency ​WAM reported, after blaming it for two other incidents involving ADNOC vessels in the strait on Thursday ​evening.

Source:  Reuters