If you have the opportunity to see 'Behind Closed Doors: Stalin, the Nazis and the West' produced by Laurence Rees I would recommend it. It's a documentary in six parts that gives a good account of the political on goings during the war between Stalin, the Nazis and the West.
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hmm after watching the documentary then reading this I guess some things haven't changed much..
http://news.bbc.co.uk/2/hi/business/8372894.stm
