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Oil extends gains on little sign of progress in US-Iran talks

By Thomson Reuters Sep 23, 2026 | 8:16 PM

By Jeslyn Lerh

SINGAPORE, Sept 24 (Reuters) – Oil prices extended gains on Thursday after climbing 4% in the previous session as diplomatic talks between the United States and Iran showed no concrete sign of progress.

Brent crude futures rose 43 ​cents, or 0.4%, to $103.51 a barrel at 0630 GMT, while West Texas ‌Intermediate futures climbed 35 cents, or 0.4%, to $92.51 a barrel.

The benchmarks fell in Asian morning trade on Thursday but later rebounded as investors struggled to find a clear direction amid the geopolitical deadlock.

Iran and the US remain divided over how to bring an end to their war, but diplomacy must continue, ‌a senior ​Iranian official told Reuters on Wednesday, after Iran’s president ⁠told the UN General Assembly ⁠that Tehran would never surrender to US pressure.

The official said Tehran was reviewing Washington’s response to its peace proposals, which prioritise lifting a US naval blockade on Iranian ports and reopening the Strait of Hormuz.

However, the physical market for oil is nowhere ​near a fully normalised situation, said Priyanka Sachdeva, head of market insights at Phillip Nova.

“Brent retains a larger geopolitical and sea-route premium because international crude is more directly ⁠exposed to Middle East and Hormuz disruption, while ⁠WTI benefits more from relatively insulated US supply,” Sachdeva added.

Earlier on ​Wednesday, Iran’s security chief Mohsen Rezaei said the Strait of Hormuz would not be reopened while ​Iran’s conditions are not met.

US Secretary of State Marco Rubio told reporters ‌on Wednesday that a deal with Iran would involve hard work over a period of time, adding that President Donald Trump also had military options.

Traders also evaluated possible curbs on diesel exports. Ultra-low-sulfur diesel futures were down about 5% in midday trading after website ⁠Politico said the Trump administration was preparing plans for a 90-day diesel ban, but the White House denied this.

US Energy Secretary Chris Wright had said earlier on Wednesday that a diesel export ⁠ban would not work, even ‌though Trump said he would support it.

Analysts and market watchers ⁠have warned that such a move would do little to ease ​high ‌energy prices and could worsen global supplies and further disrupt economies.

US ​distillate stockpiles, ⁠including diesel and heating oil, fell by 428,000 barrels to 107.4 million barrels last week, Energy Information Administration data showed.

Meanwhile, US crude inventories rose by 3 million barrels to 426.4 million barrels last week, though analysts polled by Reuters had expected a 641,000-barrel draw. [EIA/S]

(Reporting by Jeslyn Lerh in Singapore; Additional reporting by Arathy Somasekhar in Houston; Editing by Sonali Paul, Shri ​Navaratnam and Jamie Freed)