Columbia subject headings:
East Asia--Foreign relations--United States.
United States--Foreign relations--East Asia.
United States--Foreign relations--Vietnam.
Vietnam--Foreign relations--United States.
Harvard subject headings:
East Asia--Foreign relations--United States.
United States--Foreign relations--East Asia.
United States--Foreign relations--Vietnam.
Vietnam--Foreign relations--United States.
Princeton subject headings:
East Asia--Foreign relations--United States.
United States--Foreign relations--East Asia.
United States--Foreign relations--Vietnam.
Vietnam--Foreign relations--United States.