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So Germany falls to a communist revolution in the '20s and joins an alliance with a USSR effectively turning Central-to-Eastern Europe communist.
Assuming an anti-communist alliance develops and confrontation leads to a WW2 (ie a global war) analogue against the Communist Bloc what would the sides be?
Would Western Europe be more susceptible to fascism?
Would the US join against the Communists?
Would the Japanese be a western ally?
Who would be neutral? or semi-neutral (ie neutrality between 2 members on opposite sides in order to wage war against others on that side)?