Columbia subject headings:
Harvard subject headings:
Caucasus--Foreign relations--Russia (Federation)
Middle East--Foreign relations--Russia (Federation).
Russia (Federation)--Foreign relations--Caucasus.
Russia (Federation)--Foreign relations--Middle East.
Princeton subject headings:
Caucasus--Foreign relations--Russia (Federation).
Middle East--Foreign relations--Russia (Federation).
Russia (Federation)--Foreign relations--Caucasus.
Russia (Federation)--Foreign relations--Middle East.