With EU leaders discussing plans to counter Russian drones, what exactly is a ‘drone wall’?

After weeks of repeated incursions into European airspace, officials are meeting in the Danish capital Copenhagen where they are expected to discuss several measures intended to protect the continent’s skies, including a flagship “drone wall” initiative.

​ After weeks of repeated incursions into European airspace, officials are meeting in the Danish capital Copenhagen where they are expected to discuss several measures intended to protect the continent’s skies, including a flagship “drone wall” initiative. Read More Breaking News, Latest News and Videos | CNN