Guntram Wolff, senior fellow at Bruegel, warned Monday that financial markets are pricing in an unrealistically high probability of a comprehensive U.S.-Iran nuclear deal, leaving oil and regional assets exposed to sharp repricing.
Markets are pricing an 80% probability of a comprehensive U.S.-Iran nuclear deal, far above realistic odds, Guntram Wolff, senior fellow at Bruegel, said Monday, warning crude oil could swing 20% in either direction.
"The market is way too optimistic about the prospects of a deal. The gaps between negotiators remain significant, particularly on nuclear enrichment and sanctions relief," Wolff said in an interview on Bloomberg Television.
U.S. and Iranian negotiators reached a tentative 60-day memorandum of understanding on May 28 to extend the ceasefire and launch talks on Iran's nuclear program. But the deal requires approval from both President Donald Trump and Supreme Leader Mojtaba Khamenei, neither of whom has signed off. Iran holds 440.9 kilograms of uranium enriched to 60% purity, a short technical step from weapons-grade levels of 90%, according to the International Atomic Energy Agency. The Islamic Republic has demanded immediate access to $12 billion in frozen assets as a precondition for nuclear discussions — a condition the Trump administration has rejected.
The Strait of Hormuz, through which about a fifth of the world's traded oil and natural gas flows, remains effectively closed, with Iran allowing roughly two dozen commercial vessels daily compared with more than 100 before the war. Treasury Secretary Scott Bessent predicted oil prices could "come down very quickly" once a deal is finalized, but Wolff's warning suggests the opposite scenario — a collapse in talks — carries far more weight than markets currently reflect.
The tentative MoU would require Iran to remove all naval mines from the strait within 30 days and cease imposing tolls on commercial vessels, while the U.S. would gradually lift its naval blockade on Iranian ports and relax sanctions. Yet the Islamic Revolutionary Guards Corps continues to assert control over the waterway, publishing daily roll-ups of vessels using Iran's illegal traffic separation scheme and warning it will target any military vessel that intervenes.
Iran's hardline faction, particularly IRGC Commander Major General Ahmad Vahidi and his inner circle, has shown no willingness to make meaningful concessions, according to the Institute for the Study of War. Parliament Speaker Mohammad Bagher Ghalibaf, who leads Iran's negotiating delegation, may not be fully aligned with key decision-makers in Tehran, raising questions about whether any agreement signed by negotiators can survive ratification.
The last time a similar geopolitical risk premium was priced into oil markets was during the 2019 attacks on Saudi Aramco's Abqaiq facility, when Brent crude spiked 15% in a single session before retreating. A collapse in Iran talks could trigger a comparable move, Wolff suggested, while a genuine breakthrough would likely send oil below $60 a barrel for the first time since 2021.
The U.S. Treasury Department imposed additional sanctions on the Iranian military's oil sales arm even as word of the tentative deal emerged, showing the administration's dual-track approach of negotiating while maintaining economic pressure. Kuwait intercepted missiles fired from Iran on May 28 in what U.S. Central Command called an "egregious ceasefire violation," highlighting the fragility of the current truce.
This article is for informational purposes only and does not constitute investment advice.