US President Donald Trump signed a landmark memorandum of understanding with Iran at the Palace of Versailles on 18 June, capping a day of intense diplomacy in Paris and marking what the White House is describing as a major breakthrough in Washington-Tehran relations. The accord is designed to reduce hostilities, reopen the Strait of Hormuz, and create a framework for broader negotiations — with Trump projecting the deal as a driver of regional stability and lower global energy prices.

How the Signing Unfolded

Trump first signalled the deal's imminent conclusion upon landing in Paris, telling reporters he expected it finalised within 48 hours. Hours later, emerging from a dinner hosted by French President Emmanuel Macron at Versailles, he confirmed the document had been executed. 'It's signed,' Trump told reporters. 'I signed it in Versailles. Just signed it.'

The memorandum is intended to serve as a foundational framework for further Washington-Tehran negotiations while restoring normal commercial shipping through the Strait of Hormuz — one of the world's most critical energy corridors, through which roughly a fifth of global oil supply transits.

Nuclear Programme: The Central Objective

Trump made clear that preventing Iran from acquiring a nuclear weapon remains the deal's core purpose. Asked about provisions addressing Iran's existing nuclear material, he said such stockpiles were 'much less important than not having a nuclear weapon.'

He also drew a notable distinction between nuclear arms and conventional ballistic missiles, suggesting Iran could retain some missile capability if neighbouring states maintained comparable arsenals. 'A ballistic missile is not the same thing as what we're talking about when we talk nuclear,' Trump said. 'But if Saudi Arabia and Qatar and they all have some, I would say in relative proportion, I think it's OK.'

Military Presence and Compliance Warnings

Trump indicated that US military forces would remain in the Gulf region for the foreseeable future, describing a watch-and-wait posture. 'I would say a little while, see how it all goes,' he said. He also issued a pointed warning that military action remained on the table if Tehran failed to honour the agreement. 'If they don't come through, is it a threat that we'd bomb? You can call whatever you want, but it will probably happen,' Trump said.

On the memorandum's reported 60-day timeframe for negotiating a comprehensive settlement, Trump signalled flexibility. 'Just as long as they're behaving, I really don't care that much,' he said.

Broader Geopolitical Backdrop

The Versailles signing came as world leaders convened in France for discussions spanning global security, trade, and energy. On the sidelines, Trump also addressed the war in Ukraine, acknowledging that Kyiv was holding its ground against a larger Russian military — 'they're doing pretty well, they're holding their own' — and suggested he may reimpose sanctions on Russia given the decline in global oil prices. 'Now that the oil price is way down... I may put it back on,' he said.

This comes amid a broader recalibration of US foreign policy under Trump's second term, with the administration pursuing negotiated settlements across multiple flashpoints simultaneously. Whether the Versailles memorandum translates into a durable agreement will depend on the technical talks that follow within the stipulated timeframe.