Oil prices climbed to a three-week high as diplomatic efforts between the U.S. and Iran faltered, tightening the supply outlook for a market already on edge.
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Oil prices climbed to a three-week high as diplomatic efforts between the U.S. and Iran faltered, tightening the supply outlook for a market already on edge.

Oil prices jumped nearly 2 percent Monday after the latest round of US-Iran peace talks stalled, with Brent crude topping $107 a barrel as fresh geopolitical risks intensified concerns over already-strained global supplies.
"This move puts the ball squarely back in Iran’s court, and the clock is now ticking loudly,” IG market analyst Tony Sycamore said, adding that Tehran could face pressure to shut production at ageing oil fields if storage capacity runs out.
The breakdown in talks sent Brent crude futures $2.16 higher to $107.49 a barrel, its highest since April 7, while West Texas Intermediate gained 1.88 percent to $96.17. The surge follows a volatile week that saw both benchmarks climb by double digits after Iran severely restricted traffic through the Strait of Hormuz, a chokepoint for a fifth of the world’s oil.
The diplomatic failure, underscored by President Trump's cancellation of an envoy's trip to Pakistan, leaves the market exposed to further supply shocks. Goldman Sachs has raised its fourth-quarter Brent forecast to $90 a barrel, citing the unprecedented scale of the shock and upside risks to prices.
The immediate market impact reflects a tangible tightening of supply. Tehran has largely closed the Strait of Hormuz while Washington continues its blockade of Iranian ports. Shipping data from Kpler showed that traffic through the key waterway remains severely restricted, with just one oil products tanker entering the Gulf on Sunday.
The last time tensions in the strait escalated to this degree, in 2019, Brent prices spiked more than 15 percent in a single day. While the current moves are more measured, the underlying risk to the approximately 21 million barrels per day that transit the strait keeps a significant risk premium baked into prices.
The stalled negotiations introduce a period of heightened uncertainty, with prediction markets showing dwindling odds of a diplomatic breakthrough. The April 30 peace deal market, though thinly traded, has seen its value collapse, according to data from The Guardian.
Reflecting the tightening supply scenario, Goldman Sachs revised its fourth-quarter oil price forecasts to $90 per barrel for Brent and $83 for WTI. “The economic risks are larger than our crude base case alone suggests because of the net upside risks to oil prices… and the unprecedented scale of the shock,” analysts led by Daan Struyven said in an April 26 note. Without a clear path to de-escalation, traders will be watching for any statements from Donald Trump or Iranian Foreign Minister Abbas Araghchi that could signal a renewed willingness to negotiate.
This article is for informational purposes only and does not constitute investment advice.