Columbia subject headings:
Harvard subject headings:
Cultural diplomacy--United States.
Cultural relations--Philosophy.
United States--Foreign public opinion.
United States--Foreign relations--21st century.
United States--Foreign relations--Philosophy.
United States--Relations.
Princeton subject headings:
Cultural diplomacy--United States.
Cultural relations--Philosophy.
United States--Foreign public opinion.
United States--Foreign relations--21st century.
United States--Foreign relations--Philosophy.
United States--Relations.