Columbia subject headings:
Japan--Foreign relations--United States.
Military bases, American--Japan--Okinawa-ken.
United States--Foreign relations--Japan.
Harvard subject headings:
Japan--Foreign relations--United States.
Military bases, American--Japan--Okinawa-ken.
United States--Foreign relations--Japan.
Princeton subject headings:
Japan--Foreign relations--United States.
Military bases, American--Japan--Okinawa-ken.
United States--Foreign relations--Japan.