Columbia subject headings:
Europe--Foreign relations--United States.
Peaceful change (International relations)
Security, International.
United States--Foreign relations--Europe.
Harvard subject headings:
Europe--Foreign relations--United States.
Peaceful change (International relations)
Security, International.
United States--Foreign relations--Europe.
Princeton subject headings:
Europe--Foreign relations--United States.
Peaceful change (International relations)
Security, International.
United States--Foreign relations--Europe.