Crude futures surged in after-hours trading on Wednesday as markets weighed the prospect of a US ban on diesel exports against signs of easing crude supply disruptions in the Gulf, while Iranian President Masoud Pezeshkian vowed that Tehran would not surrender.
Dubai 1st Line Futures rose 3.6% to $98.56/bbl. Front-month West Texas Intermediate futures were up 2.8% to $92.88 per barrel, while Brent futures advanced by 4.3% to $103.56/bbl.
The American Petroleum Institute said the US supplies about 20% of diesel traded globally by sea, and an export ban would remove that supply from the market, exacerbating the global refining crisis driving high fuel prices.
The Trump administration is reportedly preparing a plan for a 90-day diesel export ban. President Trump said on Tuesday that he has called for a ban on US diesel exports, while Treasury Secretary Scott Bessent reportedly confirmed that the administration is examining whether a full or partial ban is feasible.
Meanwhile, Pezeshkian told the UN General Assembly on Wednesday that Iran would not surrender in the conflict with the US but said Tehran still believed diplomacy could end the conflict. Soojin Kim, research analyst at MUFG, said that progress on both Saudi export capacity and US-Iran talks is unwinding part of the geopolitical premium, though unresolved Hormuz and Red Sea risks leave the market vulnerable to renewed disruption.