Presented by Professor David Reynolds. Historian Professor David Reynolds reassesses Stalin’s role in the life and death struggle between Germany and Russia in World War Two, which he argues was ultimately more critical for British survival than ‘Our Finest Hour’ in the Battle of Britain itself. Want to watch more full-length Documentaries? Click here: goo.gl/zCIIDC Content licensed from Digital Rights Group (DRG). Produced by ClearStory.