Columbia subject headings:
Great Britain--Foreign relations--1936-1945.
Operation Overlord.
Soviet Union--Foreign relations--1917-1945.
United States--Foreign relations--1933-1945.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Great Britain--Foreign relations--1936-1945.
Operation Overlord
Soviet Union--Foreign relations--1917-1945.
United States--Foreign relations--1933-1945.
World War, 1939-1945--Diplomatic history.
Princeton subject headings:
Great Britain--Foreign relations--1936-1945.
Operation Overlord.
Soviet Union--Foreign relations--1917-1945.
United States--Foreign relations--1933-1945.
World War, 1939-1945--Diplomatic history.