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This seems to me to be a strangely neglected scenario - the Communists coming to power in Portugal in 1974 and the extreme left getting a Western European government as an ally. Its implications for Spain are particularly interesting (not just because of the democratisation being so near, nor of Franco still being alive, but also ETA). I think it's wrong to think that it would be merely another Olof Palme; Cunhal was amongst the most pro-Soviet Communist leaders in Western Europe.
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