President Emmanuel Macron announced on Monday that France and the United Kingdom are prepared to lead a European maritime mission to secure freedom of navigation in the Strait of Hormuz, with support from Italy and the Netherlands. Speaking on French television ahead of the G7 summit in Évian, Macron said the operation could be deployed within two to three days of the signing of a memorandum between Washington and Tehran, scheduled for 19 June in Geneva. The French aircraft carrier Charles de Gaulle, currently in the region, would be positioned in the strait along with escort frigates, while surveillance aircraft and a frigate could be dispatched as early as Tuesday. Macron stressed that no transit fees should be imposed on commercial shipping, calling any such levies a violation of international law.

The initiative reflects a broader European effort to stabilise a chokepoint through which roughly a fifth of global oil supplies pass. Macron indicated that Oman had raised no objection to an international presence in the strait, and that the mission would proceed only if requested by the United States, Iran, and Oman. The French president also revealed that G7 leaders would work with Gulf states to develop alternative energy supply corridors, reducing long-term dependence on the Hormuz route. Viewed from European capitals, the naval deployment is both a practical measure to clear mines and escort vessels, and a signal of the continent's willingness to underwrite a fragile peace.

From Tehran, however, the European plans have been met with a sharp insistence on national sovereignty. Iranian foreign ministry spokesman Esmaeil Baghaei stated that the memorandum of understanding with the United States does not provide for any foreign naval mission in the strait. Iranian officials maintain that the waterway lies within Iran's territorial jurisdiction and that its management—including any future security arrangements or transit fees—will be handled exclusively by Iran. The Iranian readout suggests that details of the agreement are still being finalised, and that Western announcements may be aimed at shaping expectations before the Geneva ceremony.

The gap between European readiness and Iranian sovereignty claims underscores the delicate nature of the diplomatic process. While the US-Iran framework reportedly includes a cessation of hostilities in Lebanon and other theatres, the implementation of maritime security provisions will require careful choreography. The G7's parallel push for energy route diversification signals a hedging strategy that acknowledges the strait's enduring volatility. As negotiators prepare for the 19 June signing, the question remains whether a European naval mission will be accepted as a confidence-building measure or rejected as an external imposition, with the consent of all littoral states emerging as the critical variable.