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Poland responds to Russian drones incursion by invoking Article 4 of the NATO treaty − what happens next?

  • Written by John Deni, Research Professor of Joint, Interagency, Intergovernmental, and Multinational Security Studies, US Army War College
Poland responds to Russian drones incursion by invoking Article 4 of the NATO treaty − what happens next?Authorities inspect a house damaged by debris from a Russian drone shot down in eastern Poland.Wojtek Radwanski/AFP via Getty Images

NATO fighter jets shot down multiple Russian drones in Polish airspace on Sept. 10, 2025, sparking fears of an expanding Russia-Ukraine war.

The incident represented the first such incursion by unmanned Russian...

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