Columbia subject headings:
European Union countries--Foreign relations.
Security, International--European Union countries.
Harvard subject headings:
European Union countries--Foreign relations--Congresses.
European Union countries--Foreign relations.
European Union--Officials and employees.
European Union. High Representative for the Common Foreign and Security Policy--Congresses.
Security, International--European Union countries
Security, International--European Union countries--Congresses.
Princeton subject headings:
European Union countries--Foreign relations--Congresses.
Security, International--European Union countries--Congresses.