Columbia subject headings:
Europe, Eastern--Foreign relations--Soviet Union.
Europe, Eastern--Politics and government--1945-1989.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za.
Soviet Union--Foreign relations--1945-1991.
Soviet Union--Foreign relations--Europe, Eastern.
World politics--1945-1989.
Harvard subject headings:
Communism--History
Communist countries--Foreign relations--Soviet Union.
Communist countries--Politics and government.
Post-communism
Soviet Union--Foreign relations--Communist countries.
Princeton subject headings:
Communism--History.
Communist countries--Foreign relations--Soviet Union.
Post-communism.
Soviet Union--Foreign relations--Communist countries.
World politics--1945-1989.