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It seems like ATL in regards to Cuba generally falls into one of three categories
1) The USA takes it over and it eventually ends up as a state
2) The CSA takes it over and it eventually ends up as a state (or some combination with 1) )
3) World War III starts over the embargo.
In that regards World War Z was actually pretty refreshing. (At the end of it, Cuba is probably one of the best places in the world to live)