The Belgian government is urgently seeking drone defenses after sightings led to the temporary closure of Zaventem airport near Brussels. Defence Minister Theo Francken acknowledged the threat drones pose to civilian infrastructure across Europe. Brussels Airlines reported significant disruptions affecting around 3,000 passengers, with costs from canceled flights. The situation has raised concerns about potential links to Russian hybrid warfare, although no evidence has been found. The Kremlin's actions in Eastern Europe are seen as testing European defenses and distracting from support for Ukraine.