The statement, first published on GOV.UK on 15 June 2026, has since been updated on several occasions to add further signatories, most recently on 17 June 2026. It addresses several matters of potential interest from a regulatory and compliance perspective, summarised below.

Freedom of navigation in the Strait of Hormuz. The leaders describe the urgent re-opening of the Strait of Hormuz, with unconditional and unrestricted freedom of navigation, as essential. They commit to playing their part in achieving this, in accordance with their respective constitutional requirements, including through a strictly defensive and independent mission intended to reassure commercial shipping and to conduct mine clearance operations.

Sanctions relief and nuclear non-proliferation. The statement reiterates that Iran must never acquire a nuclear weapon and expresses a readiness to work with the United States, Iran and the International Atomic Energy Agency (IAEA) to that end. Of relevance to sanctions practitioners, the E4 leaders state that they are prepared to lift relevant sanctions in response to clear, verifiable steps by Iran on its nuclear programme. The statement does not identify which specific sanctions measures would be affected, nor the timing or sequencing of any such relief.

As negotiations advance, affected parties should monitor developments closely, particularly the prospect of phased sanctions relief contingent on verifiable compliance, and any consequent adjustments to navigation and maritime security arrangements. The provisional nature of the MoU means that compliance obligations, licensing positions, and applicable restrictions may evolve as detailed terms are finalised and implemented across the participating jurisdictions.

Regional stability. The signatories reaffirmed their support for the stability, sovereignty, and territorial integrity of Lebanon and underscored the importance of a robust ceasefire.

The statement concluded with a commitment to work intensively with the United States, Iran, and regional partners to maintain momentum and pursue a long-term diplomatic settlement.

The press release can be found here