Mark Rutte faces a critical moment as he visits Washington to engage with Donald Trump amid renewed uncertainty over the NATO alliance. Tensions have grown because of disagreements over military involvement in Iran and concerns about burden-sharing among member states. The fact that most European nations have resisted Trump’s appeals to support the USA militarily has prompted him to lash out against them and issue threats about leaving the alliance. Rutte’s priority will be to reassure Trump while allowing member states to maintain independent positions on Iran. His diplomatic approach, though controversial among some allies, is seen by observers as necessary in navigating a fragile geopolitical landscape. One commentator has said, ‘There is clearly an effort to steer the administration towards a more rational approach to NATO. If Rutte can calm tensions at a moment when the stakes are so high, then he should at least try.’