Columbia subject headings:
Europe--Military relations--United States.
Europe--Strategic aspects.
North Atlantic Treaty Organization.
United States--Military policy.
United States--Military relations--Europe.
Harvard subject headings:
Europe--Military relations--United States.
Europe--Strategic aspects.
National security--Europe
North American Treaty Organization--United States.
United States--Military policy.
United States--Military relations--Europe.
Princeton subject headings:
Europe--Military relations--United States.
Europe--Strategic aspects.
North Atlantic Treaty Organization.
United States--Military policy.
United States--Military relations--Europe.