Columbia subject headings:
Harvard subject headings:
Russia--Foreign relations.
Russia--Politics and government.
Social integration--Russia--History.
Social integration--Soviet Union--History.
Soviet Union--Foreign relations.
Soviet Union--Politics and government.
Princeton subject headings:
Balance of power--History.
Imperialism--History.
Russia--Foreign relations--History.
Russia--Politics and government.
Soviet Union--Foreign relations--History.
Soviet Union--Politics and government.