Oil prices fell nearly 5% on Monday, heading for the steepest single-session decline in more than 6 months, after US President Donald Trump said Iran was "seriously talking" with Washington, signaling de-escalation with an OPEC member.
Brent crude futures were down $3.30, or 4.8%, at $66.02 per barrel at 0528 GMT. US West Texas Intermediate crude fell $3.23, or nearly 5%, to $61.98 per barrel.
Both contracts are dropping sharply from multi-month highs as risks of a military strike receded after Trump's weekend comments.
He had repeatedly threatened Iran with intervention if it did not agree to a nuclear deal or continued killing protesters. The persistent threats have underpinned oil prices throughout January, said Priyanka Sachdeva, an analyst at Phillip Nova.
"The recent pullback has also been reinforced by renewed strength in the US dollar, which typically makes dollar-denominated oil more expensive for non-US buyers, further weighing on prices," Sachdeva said.
On Saturday Trump told reporters Iran was "seriously talking," hours after Tehran's top security official Ali Larijani said arrangements for negotiations were underway.
Trump's comments, along with reports that the naval forces of Iran's Revolutionary Guards have no plans for live-fire exercises in the Strait of Hormuz, are signs of de-escalation, said IG market analyst Tony Sycamore.
"The crude oil market is interpreting this as an encouraging step back from confrontation, easing the geopolitical risk premium built into the price during last week's rally and prompting a bout of profit-taking," he said.
At a meeting on Sunday, OPEC+ agreed to keep its oil output unchanged for March. In November the grouping had frozen further planned increases for January through March 2026 because of seasonally weaker consumption.
"Geopolitical risks mask a fundamentally bearish oil market," Capital Economics said in a note on January 30.
"The historical example of last year's 12-day war (between Israel and Iran), and a well-supplied oil market, will still bear down on Brent crude prices by end-2026."
