Zelensky says airlines should avoid Russian airspace as Ukraine escalates drone operations BBCUkraine war briefing: Russian sky full of our drones and not safe, Zelenskyy warns airlines The GuardianRussia Turns to New-Generation Drones and All-Day Attacks to Wear Down Ukrainians WSJZelenskiy says Ukrainian drones have effectively closed Russian airspace ReutersUkraine racing to develop new interceptors as Russian drones and missiles ravage the country CNN
