"Most NATO training areas are severely restricted in the types of UAVs that can be flown and how they can be used. This is because of fears that UAVs will malfunction and fly into controlled airspace, such as the area around civilian airports." https://static.rusi.org/Stormbreak-Special-Report-web-final_0.pdf
Original tweet: https://twitter.com/shashj/status/1699019543895568441