On May 10 1940, the Germans invaded the Low Countries, Winston Churchill became prime minister, and Harry Hopkins moved in to the White House. This remarkable man was President Roosevelt's closest confidante until the end of the war. A principal architect of the New Deal, he was the president's first envoy to meet Churchill and was sent off to meet Stalin too. But what also impresses his nominator, Jonathan Dimbleby, is his courage - Harry Hopkins had stomach cancer and died in 1946.