First Term Record — 2017–2021 NATO Article 5 national security fact-checked

Trump Spent Four Years Threatening to Leave NATO, Calling It "Obsolete," and Refusing to Commit to Article 5. Bolton Says He Wanted to Withdraw.

NATO's Article 5 — the collective defense clause that treats an attack on one member as an attack on all — has deterred war between Russia and Western Europe since 1949. Trump called NATO "obsolete" before he took office. At a May 2017 NATO summit, he gave a speech in front of the Alliance's 9/11 memorial that specifically did not include an Article 5 commitment — prompting European allies to privately express alarm. He repeatedly demanded allies pay more and threatened to "do his own thing" if they didn't. His National Security Adviser John Bolton later wrote that Trump privately raised the idea of withdrawing the US from NATO entirely on multiple occasions.

← all posts

"I will be looking at it [NATO membership]. It's possible we'd be staying and it's possible that we won't."

— Donald Trump, New York Times interview, July 20, 2016, on whether the US would honor Article 5 NATO commitments to protect Baltic states from Russian aggression

The Article 5 commitment issue was the most consequential of Trump's NATO posture. NATO's deterrence rests entirely on Russia's belief that attacking one member means going to war with all of them. If Russia believes that the US — the alliance's dominant military power — might not honor Article 5 in practice, the deterrence calculus changes. Russian military planners noted Trump's ambiguity publicly. Baltic state defense ministries increased their own military spending and diversified their security relationships. The question "is the US Article 5 commitment real?" that Trump's statements raised is not a theoretical one for Estonia, Latvia, Lithuania, and Poland — countries that share borders with Russia and have direct historical experience of Soviet occupation.

At the May 2017 NATO summit in Brussels — Trump's first — every previous president's summit speech had included an explicit Article 5 reaffirmation. Trump's speech attacked allies for not spending enough, discussed burden sharing, and conspicuously omitted Article 5 language. Aides said afterward that the omission was deliberate. European leaders had lobbied for its inclusion in advance. Trump later gave a different speech in Poland that included the language — but the original omission had already sent the signal. In July 2018, at a NATO summit dinner, Trump told European leaders that unless they raised defense spending, the US would "go it alone" — a statement that was unprecedented in post-war alliance history.

Verification note

This post distinguishes between documented facts, allegations, and analysis. Where motive, intent, corruption, or illegality remains disputed in the public record, the text attributes that judgment to court findings, official records, direct quotes, or the reporting linked below.

The Sources
  • Trump "obsolete" — multiple statements including Fox News interview January 15, 2017; "NATO is obsolete."
  • 2016 NYT interview — July 20, 2016; Article 5 Baltic states question; "possible we'd be staying and possible that we won't."
  • 2017 Brussels summit speech — May 25, 2017; Article 5 omission documented by pool reporters and NATO officials; European alarm documented by Reuters, Washington Post.
  • Bolton memoir — "The Room Where It Happened" (2020); Trump repeatedly raised idea of withdrawing from NATO.
  • 2018 dinner threat — "go it alone"; documented by multiple European and US officials; New York Times.
related← Helsinki: Sided with Putin Over US Intelligence.relatedAbandoned the Kurds Who Fought ISIS Alongside America. →