Few would disagree Stalin was an paranoid, evil man, killing millions of his countryman. But he was trying to avoid / push out war with the Germans.
It seems everyone was, except Hitler. The battlefields of WW1 were still fresh in everyone's minds.
Chamberlain had bought time by sacrificing Czechoslovakia; Stalin could do the same and sacrifice Poland.
https://books.google.nl/books?id=nQE...oland.&f=false