Columbia subject headings:
Harvard subject headings:
Diplomacy--History
Geopolitics--Eurasia.
Geopolitics--Russia (Federation)
Geopolitics--Russia.
Geopolitics--Soviet Union.
Russia (Federation)--Foreign relations.
Russia--Foreign relations.
Soviet Union--Foreign relations.
Princeton subject headings:
Geopolitics--Eurasia.
Geopolitics--Russia (Federation)
Geopolitics--Russia.
Geopolitics--Soviet Union.
Russia (Federation)--Foreign relations.
Russia--Foreign relations.
Soviet Union--Foreign relations.