In a choreographed display of diplomatic theatre, Donald Trump signed a physical copy of the “Islamabad Memorandum of Understanding” at the Palace of Versailles on Wednesday evening, flanked by Emmanuel Macron and Marco Rubio, while his Iranian counterpart Masoud Pezeshkian countersigned remotely from Tehran. The electronic signatures had already been exchanged days earlier, but the Versailles ceremony — complete with Macron’s applause and Trump’s muttered “this was not easy” — was designed to project momentum. Pakistan’s prime minister Shehbaz Sharif, who mediated the talks, confirmed the pact entered into force immediately, triggering the reopening of the Strait of Hormuz and the lifting of the US naval blockade of Iranian ports. The sudden acceleration of the signing, originally scheduled for a Friday summit in Switzerland, underscored the urgency of halting a war that had strangled global energy flows and killed thousands across the region.

Viewed from Washington, the deal is a gamble wrapped in a threat. Trump warned he would “bomb the hell out of them” if Iran violated the terms, even as he conceded it would be “unfair” for Tehran to lack ballistic missiles — a striking retreat from his earlier vow to obliterate them. The memorandum commits both sides to a permanent cessation of hostilities on all fronts, including Lebanon, and pledges non-interference in each other’s internal affairs. Yet it also grants Iran immediate sanctions relief, access to frozen assets, and a $300 billion reconstruction fund, concessions that have already drawn sharp criticism from hawks in Congress. In Tehran, the mood was triumphal: parliamentary speaker Mohammad Baqer Qalibaf called the agreement a “record defeat” for the United States, while state media framed it as the fulfilment of every war aim through negotiation rather than combat.

European and regional perspectives reveal a more ambivalent picture. French president Macron hailed the accord as a step toward lasting peace and lower energy prices, but analysts in London and Stockholm note that the text largely restores the pre-war status quo. The deal invokes Lebanon’s territorial integrity yet sidesteps any explicit requirement for Israeli withdrawal, leaving that front dangerously ambiguous. The Strait of Hormuz, chokepoint for a fifth of the world’s oil, is to be administered under a future arrangement with Oman, but for now the immediate resumption of free navigation is the tangible prize. The 14-point text, running to roughly 800 words in English, defers the most intractable questions — the fate of Iran’s enriched uranium stockpile, the scope of ballistic missile constraints, and the architecture of a permanent nuclear verification regime — to a 60-day negotiation window that can be extended by mutual consent.

That 60-day clock now ticks beneath the shadow of Trump’s ultimatum. The memorandum obliges Iran not to produce nuclear weapons and to dilute its enriched uranium under a final deal, but the details remain entirely aspirational. The US withdrawal from areas adjacent to Iran within 30 days offers an early test of compliance. For global markets, the immediate reopening of Hormuz and the prospect of Iranian crude returning to legal trade have already begun to ease the energy crisis that shook the American economy and reverberated from Shanghai to Rotterdam. Yet the path from an interim memorandum to a comprehensive treaty is strewn with the same obstacles that scuttled the 2015 nuclear accord and ignited the February 2026 war. As one Swedish defence analyst put it, the world now has “an agreement to try to reach an agreement” — and the margin for error is measured in weeks.