Cold and dark conditions are limiting what Russia and Ukraine can do with drones as they exhaust batteries, fog up cameras, and provide fewer daylight hours.
The US imposed sanctions on Zala Aero, the Russian manufacturer of the Lancet drones, on Thursday. These lightweight drones have been one hurdle against Ukraine's counteroffensive.
How cheap drones helped Hamas ambush Israel s sophisticated weaponry firstpost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from firstpost.com Daily Mail and Mail on Sunday newspapers.