The Spanish Civil War is actually slightly inaccurate. The Communist Party were sided with the Liberal Republicans instead of the revolutionaries - like the anarchists, and other socialists - and later prosecuted those revolutionaries and accused them of being fascists while a lot of them were still in the frontlines fighting actual fascists. The Communist Party were just serving the interests of the USSR, which at that point wanted a liberal government in Spain (due to their relation to France, if I recall correctly) and not a workers’ revolution.
And Russia too. Things are looking dark for Europe if things keep heading this way. And I’m still not sure what side China would take in the occasion there is a WW3, or if they would just decide to stay neutral and foster their economy while North America, Europe, and Russia just destroy each other.