Columbia subject headings:
Hungary--Foreign relations--Soviet Union.
Hungary--History--Revolution, 1956.
Intervention (International law)
Soviet Union--Foreign relations--Hungary.
Harvard subject headings:
Hungary--Foreign relations--Soviet Union.
Hungary--History--Revolution, 1956
Intervention (International law)
Soviet Union--Foreign relations--Hungary.
Princeton subject headings:
Hungary--Foreign relations--Soviet Union.
Hungary--History--Revolution, 1956.
Intervention (International law)
Soviet Union--Foreign relations--Hungary.