Drones transport blood to battlefield for life-saving medical attention in NATO exercise
相似影片：Drones transport blood to battlefield for life
Fences, drones and roadblocks: How The Hague ramped up security for NATO summit
NATO conducts major 'readiness' exercise across frontline European states
NATO must boost air and missile defences fourfold to counter Russia's threat, Rutte says
Rising deaths, fake pills, gang violence: How the EU is struggling to cope with illegal drug problem
Firefighters battle wildfires in Greece and Turkey, prompting evacuations and emergency response
