Operation Eastern Sentry boosts NATO’s eastern defenses after Russian drones violated Polish airspace, raising tensions along the Alliance’s flank.

Following the unprecedented violation of Polish airspace by Russian drones earlier this week, NATO has now launched Operation Eastern Sentry , a new mission designed to bolster defenses along its eastern flank. The operation, which was announced on Sep. 12, 2025, comes as a direct response to what the Alliance has described as “reckless and unacceptable” behavior by Moscow, and is intended to reassure member states of NATO’s readiness to defend its territory. Contents Operation Eastern Sentry boosts NATO’s eastern defenses after Russian drones violated Polish airspace, raising tensions along the Alliance’s flank. NATO’s Response and

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