Columbia subject headings:
Council of Europe.
Europe--Foreign relations--United States.
National security--Europe.
Security, International.
United States--Foreign relations--Europe.
Harvard subject headings:
Council of Europe.
Europe--Foreign relations--United States.
National security--Europe
Security, International.
United States--Foreign relations--Europe.
Princeton subject headings:
Council of Europe.
Europe--Foreign relations--United States.
National security--Europe.
Security, International.
United States--Foreign relations--Europe.