What country is self sufficient to be a good communist country? I am a little confused by your question.

OP do you mean to introduce a Juche policy similar to North Korea?

Sorry, but your submission has been removed because we don't allow hypothetical questions. If possible, please feel free to rephrase the question so that it does not call for such speculation, and resubmit Otherwise, this sort of thing is better suited for /r/HistoryWhatIf.