Columbia subject headings:
East Asia--Foreign relations--21st century.
Geopolitics--Korea.
Geopolitics--Russia (Federation)
National security--Korea (South)
Harvard subject headings:
Geopolitics--East Asia.
Korea--Foreign economic relations.
National security--Korea
World politics
Princeton subject headings:
East Asia--Foreign relations--21st century.
Geopolitics--Korea.
Geopolitics--Russia (Federation)
National security--Korea (South)