Published Sep 11, 2026, 7:18 PM ET · Updated 2 months ago · 1 source

NATO's Article 5 invoked for the first time after 9/11 attacks

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Original Report

Following the September 11th attacks, NATO allies swiftly and unanimously decided to invoke Article 5 of the NATO treaty, a clause never before used in the alliance's history, signifying a strong collective defense response and unified front against terrorism.