In a ceremony held in the Hall of Mirrors at the Palace of Versailles, a venue heavy with the symbolism of past European treaties, President Donald Trump and Iranian President Hassan Rouhani signed a comprehensive agreement intended to resolve the decade-long standoff over Iran’s nuclear programme. The deal, negotiated over 18 months through Swiss and Omani intermediaries, is the first direct US-Iran accord since the 1979 revolution.
The document commits Iran to rolling back its uranium enrichment capacity to 3.67% and submitting to intrusive inspections by the International Atomic Energy Agency. In exchange, the United States will lift all secondary sanctions on Iranian oil exports and unfreeze approximately $15 billion in assets held overseas. The agreement also includes provisions for expanded trade in agricultural commodities and a framework for future negotiations on ballistic missiles and regional proxies.
UK Prime Minister Sir Keir Starmer, speaking from Downing Street, described the accord as “a pragmatic step forward for global security” and reaffirmed Britain’s support for the Joint Comprehensive Plan of Action framework. “This deal does not solve every problem, but it restrains the most immediate threats and opens a channel for diplomacy,” he said. Starmer also confirmed that the UK would move to re-establish diplomatic representation in Tehran at chargé d’affaires level.
European reaction has been cautiously positive. France’s President Emmanuel Macron, who hosted the signing, described it as “a victory for multilateralism” but warned that verification mechanisms must be robust. Germany’s Chancellor Olaf Scholz noted that trust had to be rebuilt over time. Meanwhile, Israel’s Prime Minister Benjamin Netanyahu denounced the agreement as “a historic mistake” that would embolden Iranian aggression and allow the regime to maintain its missile programme without hindrance.
The deal’s legal status remains uncertain. The Trump administration bypassed Senate ratification by structuring the agreement as a binding executive agreement, a move that constitutional scholars argue leaves it vulnerable to legal challenge. Republican senators, including Tom Cotton and Ted Cruz, have signalled plans to introduce legislation imposing new unilateral sanctions, which would put Washington in direct violation of the accord.
Market reaction was swift. Brent crude fell by 6% to $72 per barrel on the expectation of increased Iranian supply. The Iranian rial strengthened by 12% against the dollar in black-market trading. European banks and oil traders, including TotalEnergies and Vitol, have already begun contingency planning for resumed Iranian crude purchases.
The Versailles location was itself a subject of diplomatic contention. Critics noted that the choice evoked the Treaty of Versailles, whose punitive terms were blamed for the rise of fascism. A senior Iranian negotiator told the BBC that the site was meant to signal a new era of European-led diplomacy. “We chose the hall where centuries of war were ended,” he said. “Whether this is a new beginning or another false dawn remains to be seen.”
The next 90 days are critical. The IAEA must deliver its first full compliance report by 15 May. If that report is positive, the US Treasury is required to begin delisting Iranian banks. Should it be negative, the agreement contains a snapback mechanism allowing all sanctions to be reinstated within 30 days.
