Columbia subject headings:
Harvard subject headings:
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Military relations--Foreign countries.
Soviet Union--Politics and government--1936-1953.
Soviet Union--Strategic aspects.
World War, 1939-1945--Soviet Union.
Princeton subject headings:
Communist strategy--History--20th century.
Germany--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Germany.
Soviet Union--Politics and government--1936-1953.
World War, 1939-1945--Diplomatic history.