Following the Brussels attacks, President Juncker announced on 23 March that Europe needs a Security Union to effectively combat the threat of terrorism, building on the European Agenda on Security.
Pärast Brüsselis toimunud rünnakuid teatas president Juncker 23. märtsil, et Euroopal on tarvis julgeolekuliitu tõhusaks võitluseks terrorismiohu vastu, tuginedes .