Columbia subject headings:
National security--Europe--Congresses.
National security--North America--Congresses.
North Atlantic Treaty Organization--Congresses.
Post-communism--Congresses.
Security, International--Congresses.
Harvard subject headings:
National security--Europe--Congresses
National security--North America--Congresses.
North Atlantic Treaty Organization--Congresses.
Post-communism--Congresses
Security, International--Congresses
Princeton subject headings:
National security--Europe--Congresses.
National security--North America--Congresses.
North Atlantic Treaty Organization--Congresses.
Post-communism--Congresses.
Security, International--Congresses.