NATO relations under strain

Donald Trump spent about two hours with North Atlantic Treaty Organization chief Mark Rutte in Washington on April 8, then blasted the alliance afterward and said it “wasn’t there when we needed them” during the war with Iran. The meeting was supposed to calm nerves; instead it showed how far the split has widened. (reuters.com) (politico.eu) The immediate fight is not about Russia or Ukraine. It is about Trump’s demand that European allies do more to support the United States and Israel in the Iran war, and Europe’s refusal to turn a defensive alliance into a partner in that campaign. (reuters.com) (apnews.com) North Atlantic Treaty Organization is a 32-country military pact built around one promise: if one member is attacked, the others treat it as an attack on all. That promise, known as Article 5, is the steel beam holding up Europe’s post-1949 security order. (nato.int 1) (nato.int 2) Trump’s complaint cuts at that beam from the other direction. He is saying the alliance is useful when Europe needs American protection, but not when Washington wants political backing for a war outside North Atlantic Treaty Organization territory. (reuters.com) (nytimes.com) That is why Mark Rutte’s trip mattered. Rutte, the former Dutch prime minister who became secretary general in 2024, has tried to keep Trump engaged by pointing to higher European military spending and by avoiding a public brawl. (nato.int 1) (nato.int 2) Rutte did have numbers to bring. In North Atlantic Treaty Organization’s 2025 annual report, he said European allies and Canada raised defense spending by about 20 percent in real terms in 2025, and leaders had already agreed at The Hague summit to aim for 5 percent of gross domestic product on defense and related security spending by 2035. (nato.int 1) (nato.int 2) But money was not the point in Washington this week. Trump was angry that several allies would not join the Iran fight, and Rutte later said some countries had been “tested and failed,” which is unusually sharp language from a secretary general whose job is usually to smooth over disputes. (reuters.com) (reuters.com) European capitals hear something bigger in all this than one argument about Iran. If a United States president openly questions whether allies will stand with America, Europeans start asking the mirror-image question: would America still stand with them against Russia. (reuters.com) (nytimes.com) That fear has been building for weeks, because Trump has again floated the idea of pulling the United States out of North Atlantic Treaty Organization. Even without a formal withdrawal, every new threat makes Article 5 look less like an automatic guarantee and more like a promise that depends on one man’s mood. (apnews.com) (politico.eu) The alliance has survived wars in the Balkans, the Afghanistan campaign after September 11, and Russia’s full-scale invasion of Ukraine. The reason this moment feels different is that the strain is coming from inside the alliance’s strongest member, at the exact moment Europe still depends on American weapons, intelligence, logistics, and nuclear deterrence. (reuters.com) (nato.int) So the Washington meeting was not really about whether Mark Rutte could charm Donald Trump for an afternoon. It was a test of whether North Atlantic Treaty Organization is still a rules-based alliance with a shared mission, or whether it is turning into a transaction where support is demanded case by case. (reuters.com) (bbc.com)