Global oil prices dropped sharply on Monday after U.S.-Iran talks in Switzerland ended with Tehran securing export waivers, effectively dissolving fears of a prolonged supply shortage.
Brent crude, the international benchmark, shed $1.68, a decline of 2.09%, to settle at $78.89 a barrel by early morning trade in London.
The retreat was a dramatic reversal from the session’s opening high of $82.30, which had been driven by alarming signals out of Switzerland: threats from U.S. President Donald Trump to resume military action against Iran and Tehran’s announcement that it had, once again, closed the strategically vital Strait of Hormuz.
U.S. West Texas Intermediate futures, meanwhile, slipped to $76 a barrel, down 60 cents, ahead of the contract’s expiry later in the day. The more actively traded August contract fell 69 cents to $75.16 a barrel. Monday’s moves followed an interrupted trading week, with no U.S. market settlement on Friday due to a public holiday.
High-ranking American and Iranian officials concluded their first formal round of negotiations in Switzerland on Monday, according to mediators overseeing the process. The talks, which got underway on Sunday, were convened under a memorandum of understanding reached the previous week, an agreement that extended a tenuous ceasefire, originally brokered in April, by at least another 60 days.
Iranian Foreign Minister Abbas Araqchi emerged from the talks declaring a series of wins for Tehran: waivers covering oil and petrochemical exports, the release of a portion of frozen Iranian assets held abroad, and the launch of what he described as a reconstruction and development plan for the Islamic Republic. While the terms of any broader deal remain unclear, the mere suggestion of sanctions relief sent a jolt through energy markets.
“The decline has been driven primarily by improving prospects for a diplomatic breakthrough between the United States and Iran, reviving hopes that sanctions on Iran could eventually be eased,” said Sugandha Sachdeva, founder of SS WealthStreet, a New Delhi-based research consultancy.
She added that such a development could allow “nearly 1.5 million barrels per day of Iranian crude to return to international markets, significantly improving global supply availability at a time when demand growth remains moderate.”
Before Monday’s diplomatic calming, markets had been rattled by a sharp disruption to one of the world’s most critical maritime chokepoints.
Shipping data showed the number of vessels transiting the Strait of Hormuz fell sharply on Sunday, after Iran announced it had sealed the waterway, accusing Israel and the United States of violating the interim peace agreement.
The Strait of Hormuz, through which roughly one-fifth of global oil supply passes, has been at the center of the conflict’s economic fallout, and its renewed closure, even briefly, sent traders scrambling. But as the Swiss talks wrapped up without collapse, much of that anxiety unwound.
In a further sign of improving flow, Hamid Bovard, head of the National Iranian Oil Company, told state television on Sunday that over 25 million barrels of Iranian oil had already passed through what had been a virtual blockade line since Monday of last week, a figure that underscored just how significant the supply disruption had been and how quickly it could be reversed.
Despite the encouraging signals from Geneva, analysts cautioned that the road to a lasting agreement is riddled with landmines.
In Lebanon, Israeli airstrikes on Saturday killed at least 20 people, according to the country’s state news agency NNA, coming just one day after a ceasefire with Hezbollah had taken effect, aimed at halting months of escalating cross-border violence. The strikes immediately cast doubt on the durability of regional de-escalation efforts.
“Recent developments show that moving towards a more permanent deal will be challenging, with very real risks of a flare-up in hostilities during the 60-day ceasefire,” analysts at ING wrote in a note published ahead of Monday’s announcement.
The warning reflects a broader unease in energy markets: while the diplomatic optics have improved, the underlying geopolitical architecture remains deeply unstable. A single military incident, whether in Lebanon, the Persian Gulf, or elsewhere in the region, could rapidly unwind the gains seen in recent days.
Beyond Iran, the supply landscape has shifted materially in recent days, adding further downward pressure on prices.
Oil prices had already tumbled more than 8% last week, propelled by the anticipated release of cargoes that had been stranded in the Gulf and growing speculation that U.S. sanctions on Iranian oil could be progressively lifted.
The United Arab Emirates, Kuwait, and Iraq have all offered additional crude supplies to customers over the past week, in moves that appear designed to fill any gap created by the ongoing uncertainty and to signal to markets that the region’s broader production capacity remains intact.
Iraq, in particular, announced plans to gradually restore crude output to between 4.2 million and 4.3 million barrels per day, according to a Sunday statement from the country’s deputy oil minister for upstream affairs.
Coming from OPEC’s second-largest producer, the announcement was another concrete signal to traders that supply shortfalls may be less severe than feared.
For now, oil markets appear to be pricing in a best-case diplomatic scenario, one in which Iran re-enters global energy markets in a meaningful way and regional hostilities remain contained. But seasoned traders and analysts know this is a market that can turn on a headline.
The next 60 days of the ceasefire will be closely watched. If the talks in Switzerland give way to a broader framework agreement, the bearish pressure on oil could intensify further.
But if, as has happened so many times before in this region, the détente fractures and tensions reignite, the sprint back above $80 could be swift and unforgiving.
WHAT YOU SHOULD KNOW
Oil prices fell sharply on Monday as U.S.-Iran diplomatic talks in Switzerland yielded promising results, with Tehran securing export waivers that could return up to 1.5 million barrels of Iranian crude daily to global markets.
While the news eased immediate supply fears and pushed Brent crude down over 2%, the situation remains precarious. Israeli strikes in Lebanon, Iran’s brief closure of the Strait of Hormuz, and the fragility of a 60-day ceasefire all serve as stark reminders that this market calm rests on a diplomatic house of cards.
