At the G7 Évian summit (15–17 June 2026), the leaders of the major industrialised economies meet under the shadow of the US-Iran agreement set for signing in Geneva. Trump arrives with a major diplomatic move, while France, the UK, Germany and Italy tie their support to verification, the reopening of the Strait of Hormuz, gradual sanctions relief and guarantees for Ukraine. Beyond the headlines, the summit tests whether unilateral American results can be turned into a common, verifiable architecture, and whether the G7 can jointly control energy, security, capital and critical minerals in an increasingly transactional world.