Trump considers terminating U.S. NATO membership over Iran war
Donald Trump said he is strongly considering pulling the United States out of NATO after criticizing a lack of support from allied nations over the Iran war.
Objective Facts
Trump said he is strongly considering pulling the United States out of NATO after criticizing allied nations' refusal to support his Iran military campaign, following a mid-March warning to NATO allies of a "very bad" future should they not help secure the Strait of Hormuz. European countries responded to Trump with caution and resistance, declining to send warships to the vital trade waterway. Secretary of State Marco Rubio said the U.S. may need to "re-examine" its relationship with NATO once the war ends, noting that if the alliance is "just about us defending Europe" while denying U.S. access to bases, "that's not a very good arrangement." Italy's government denied U.S. bombers the use of a military base in Sicily, though rushed to clarify there were no tensions with Washington. British Prime Minister Keir Starmer said: "This is not our war. We will not be drawn into the conflict."
Left-Leaning Perspective
CNN analysis noted that slimmed-down European militaries have been exposed by the war. Without U.S. support, there's no chance NATO powers could open the strait and keep it open, even as the mighty U.S. Navy currently considers it too dangerous to venture in range of Iranian drones and missiles. CNN reported that the dispute fits Trump's preexisting perceptions of NATO as a scheme to bilk the U.S. of resources to protect a continent unwilling to pay for its own security, while many European nations have also been clear they aren't interested in fixing a problem of Trump's own making. Trump put European leaders in an impossible position; his year of berating allies meant they had little room to help him and save their own political careers, yet staying out of the war won't spare them from paying its costs as high energy prices and rising inflation threaten fragile economies and cause political blowback among electorates to already-weak centrist governments. According to King's College London scholar Samir Puri, "visceral anger" toward the UK and other European allies—including Defense Secretary Pete Hegseth—means "The bond of NATO weakens further," with concerns Trump might be willing to end the war with Iran in control of the waterway. The Trump administration argued it was defending against an Iranian preemptive strike, though CNN reported the intelligence did not support that claim. One key issue for European countries is legality: the UN has not approved the war—there was no resolution—and this is not a war of self-defense because there was no evidence of imminent attack by Iran against the U.S. or Israel, and NATO allies were not consulted.
Right-Leaning Perspective
The Daily Wire reported Trump signaled a "seismic shift in the post-WWII global order," arguing the alliance became a "one-way street" after the U.S. stood by Europe and Ukraine while allies declined to support the Iran operation, pointing to their refusal to help reopen the Strait of Hormuz. Senior administration officials echoed the president's frustration, with Secretary of State Marco Rubio warning that if NATO is "just about us defending Europe" while denying U.S. military flexibility, "that's not a very good arrangement." Breitbart noted Trump felt most betrayed by the UK's failure to get involved, citing the U.S. rushing to Europe's aid when Russia invaded Ukraine in 2022—which is not a NATO member and Washington was in no way treaty-bound to do so—as a counterpart for calling on European NATO allies to support the Iran operation. Defense Secretary Pete Hegseth declined to reaffirm U.S. commitment to NATO's collective defense, a concept that lies at the heart of the alliance. Sources suggested the White House is eyeing a model that would block delinquent or uncooperative members from decision-making and is revisiting plans to withdraw troops from Germany, with the message clear that the era of the American "blank check" for European security is over.
Deep Dive
Trump has voiced skepticism about NATO since the U.S. and Israel launched the war against Iran on February 28, saying that when he called on allies for support he "didn't insist too much" but expected it to be "automatic." During his first term and early second term, Trump grieved NATO largely over defense spending; at the 2025 Hague summit most allies committed to "investing 5% of GDP annually on core defence requirements" by 2035, which Trump called a "big win," though he previously refused to rule out withdrawing during disputes over Greenland annexation. The current NATO threat differs in scope: it is tied directly to a specific military operation, not general burden-sharing. Trump's core argument—that allies must reciprocate U.S. security commitments—contains an internal logical problem both sides acknowledge: NATO is a collective *defense* alliance, triggered when a member is attacked, not a tool for launching consensual wars of choice. NATO's charter calls for collective defense of any attacked member; Article 5 was invoked only once following 9/11, when members came to the U.S. aid, but it was the U.S. and Israel that attacked Iran, leading members to question why NATO would become involved. Left-leaning outlets emphasize this structural mismatch; right-leaning sources argue the U.S. made exceptions for Ukraine (a non-member), so Europe should reciprocate for Iran. Both miss that the political economy is different: European publics opposed the Iran war domestically, with reluctance rooted in both danger and the fact that Trump launched the conflict unilaterally without consultation, creating liability for leaders. By law, Trump would need two-thirds Senate approval to withdraw the U.S. from NATO. Given the National Defense Authorization Act of 2024, withdrawal would be far from easy with potential legal fallout, though the Supreme Court's tendency to rule in favor of Trump could limit Congressional leverage. What remains unresolved: whether Trump intends withdrawal as policy or as leverage to extract concessions (defense spending increases, base access for future conflicts). Legal experts warn that the mere suggestion of U.S. NATO exit erodes trust, cohesion, and credibility of collective defense, weakens deterrence, and emboldens adversaries.