Columbia subject headings:
Caucasus--Foreign relations.
Caucasus--Politics and government.
National security--Caucasus.
Harvard subject headings:
Caucasus--Foreign relations.
Caucasus--Politics and government.
International relations
National security--Caucasus.
Princeton subject headings:
Caucasus--Foreign relations--European Union countries.
Caucasus--Foreign relations--Russia (Federation).
Caucasus--Foreign relations--United States.
Caucasus--Politics and government.
Caucasus--Strategic aspects.
European Union countries--Foreign relations--Caucasus.
National security--Caucasus--International cooperation.
National security--Caucasus.
Russia (Federation)--Foreign relations--Caucasus.
United States--Foreign relations--Caucasus.