Introduction Europe is building a wall. Not made of concrete, but with code, signals and radar. What began as a suggestion from Lithuania, has evolved into one of the European Union’s largest and most complex defense projects, a ‘Drone wall’ stretching from the Baltics down to the Black Sea.  The ‘Drone Wall’, formally known as the European Drone Defense Initiative is part of the EU's broader Defense Readiness Roadmap 2030, and has been announced in response to the rising num