Authorities acted for the second time in days. European governments are on alert after Russian incursions into NATO airspace, but Danish authorities said they could not say who was behind the latest incident.Authorities acted for the second time in days. European governments are on alert after Russian incursions into NATO airspace, but Danish authorities said they could not say who was behind the latest incident.
Denmark Briefly Closes More Airports After Unexplained Drone Sightings
