Columbia subject headings:
Harvard subject headings:
Iran--Foreign relations--United States.
Japan--Foreign relations--United States.
Mexico--Foreign relations--United States.
United States--Foreign relations--Iran.
United States--Foreign relations--Japan.
United States--Foreign relations--Mexico.
Princeton subject headings:
Iran--Foreign relations--United States.
Japan--Foreign relations--United States.
Mexico--Foreign relations--United States.
United States--Foreign relations--Iran.
United States--Foreign relations--Japan.
United States--Foreign relations--Mexico.