Columbia subject headings:
Aggression (International law)
Europe, Eastern--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Europe, Eastern.
Harvard subject headings:
Aggression (International law)
Europe, Eastern--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Europe, Eastern.
Princeton subject headings:
Aggression (International law)
Europe, Eastern--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--Europe, Eastern.