Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--1945-
Japan--Foreign relations--Soviet Union.
Kuril Islands (Russia)--International status.
Soviet Union--Foreign relations--1945-1991.
Soviet Union--Foreign relations--Japan.
Princeton subject headings:
Japan--Foreign relations--1945-1991.
Japan--Foreign relations--Soviet Union.
Kuril Islands (Russia)--International status.
Soviet Union--Foreign relations--1945-.
Soviet Union--Foreign relations--Japan.