Columbia subject headings:
Europe, Eastern--Foreign relations--Soviet Union.
Europe, Eastern--Politics and government--1945-
National security--Soviet Union.
Soviet Union--Foreign relations--Europe, Eastern.
Harvard subject headings:
Europe, Eastern--Foreign relations--Soviet Union.
Europe, Eastern--Politics and government--1945-1989.
National security--Soviet Union
Soviet Union--Foreign relations--Europe, Eastern.
Princeton subject headings:
Europe, Eastern--Foreign relations--Soviet Union.
Europe, Eastern--Politics and government--1945-
National security--Europe, Eastern.
National security--Soviet Union.
Soviet Union--Foreign relations--Europe, Eastern.