March 27, 2026
The United States, Iran, and the Risk to NATO
On March 14, in the wake of a global energy shock triggered by the United States military campaign against Iran, President Donald Trump called on allies to help reopen the Strait of Hormuz, where Iranian attacks on commercial shipping have disrupted oil flows. European leaders responded cautiously, and in many cases negatively, as they tried to balance concerns about the conflict with the need to preserve relations with Washington. German Defense Minister Boris Pistorius was blunt, saying, “This is not our war.” United Kingdom (UK) Prime Minister Keir Starmer struck a more measured tone, pledging to work with allies to restore freedom of navigation, but emphasizing that the UK would “not be drawn into the wider war.” The following day, Trump raised the stakes, warning that NATO faces a “very bad” future if allies fail to act. NATO Secretary General Mark Rutte expressed confidence that members would ultimately come together to secure the strait. But the incident has already exposed deep unease in Europe, both about the trajectory of the conflict and on the future of the transatlantic alliance.
To discuss all of this and more, Brussels Sprouts is excited to welcome Cathryn Clüver Ashbrook and Jeremy Shapiro to this week’s show.
Cathryn Clüver Ashbrook is executive vice president at the Bertelsmann Foundation
Jeremy Shapiro is the research director of the European Council on Foreign Relations, where he focuses on U.S. foreign policy and transatlantic relations
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