Columbia subject headings:
Japan--Foreign relations--1989-
Japan--Foreign relations--Korea (South)
Korea (South)--Foreign relations--2002-
Korea (South)--Foreign relations--Japan.
Harvard subject headings:
Japan--Foreign relations--Korea--21st century.
Korea--Foreign relations--Japan--21st century.
Princeton subject headings:
Japan--Foreign relations--Korea--21st century.
Korea--Foreign relations--Japan--21st century.