For years, NATO countries have watched Russian drones breach their airspace, reluctant to shoot them down for fear of escalation. That restraint is now beginning to erode.

After Russian drones injured civilians in Romania, while Russian electronic jamming continued diverting Ukrainian drones toward critical infrastructure in the Baltic region, NATO fighter jets finally began shooting intruders down.

But using expensive air-to-air missiles to destroy cheap, one-way Geran and Gerbera drones is h

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