Columbia subject headings:
East Asia--Foreign relations--21st century.
Japan--Foreign relations--Korea.
Korea (South)--Foreign relations--2002-
Korea--Foreign relations--Japan.
Harvard subject headings:
East Asia--Foreign relations--21st century.
Japan--Foreign relations--Korea
Korea (South)--Foreign relations--2002-
Korea--Foreign relations--Japan
Princeton subject headings:
East Asia--Foreign relations--21st century.
Japan--Foreign relations--Korea (South).
Japan--Social conditions--21st century.
Korea (South)--Foreign relations--2002-
Korea (South)--Foreign relations--Japan.