More than a dozen Russian drones entered Poland overnight, prompting NATO to scramble fighter jets to shoot them down in what Western officials described on Wednesday as a dangerous escalation of the war in neighboring Ukraine.

It was the first time in the history of NATO that alliance fighters had engaged enemy targets in allied airspace, officials said. The drone incursion prompted Poland’s government to invoke Article 4 of the NATO treaty, a rarely used mechanism triggered when a member is under threat that prompts a formal discussion within the alliance.

<from NYT 9/10/25>