The roadmap will include four defense projects, including the drone wall, the source said. The drone wall initiative would not be a physical wall, but instead a layered network of detection and interception systems, building on individual EU members’ anti-drone capabilities. The idea was announced as a number of European countries reported incursions into their airspace, with most pointing the finger at Russia. “And that is why we will propose immediate actions to create the drone wall as part of the Eastern Flank Watch. Despite this, there are still a number of ways the drone wall could assist NATO and European Union countries.