Politics

What are NATO Articles 4 and 5?

 10.09.2025, 15:28
Since NATO’s creation, Article 4 has been invoked seven times, most recently in February 2022 after Russian full-scale invasion of Ukraine. (Klaudia Radecka/NurPhoto via Getty Images)
Since NATO’s creation, Article 4 has been invoked seven times, most recently in February 2022 after Russian full-scale invasion of Ukraine. (Klaudia Radecka/NurPhoto via Getty Images)

Could developments in Ukraine trigger alliance defence obligations?