Columbia subject headings:
Harvard subject headings:
International relations--Research
Japan--Foreign relations--United States.
Okinawa Island (Japan)--International status.
Ryukyu Islands--International status.
United States--Foreign relations--Japan.
Princeton subject headings:
International relations--Research.
Japan--Foreign relations--United States.
Okinawa Island (Japan)--International status.
Ryukyu Islands--International status.
United States--Foreign relations--Japan.