In Euskadi is probably, but not in Catalonia (Barcelona, Tarragona and Huesca in HoI, wrong provinces after all). There's no significant independence movements in Catalonia (Well, they aren't in Spain in general, but the most important is the basque movement) and no left-wing radical movements except, perhaps, ETA (They claim to be Marxist, if they are, I doubt).
But, despite that, the event should fire when soviets enter in France (Because if it fires at the start of the war, it will be useless).
That's right. Also, as it is the 3rd time I fight ww3, it is diffirucult to cross the Rhein, isn't? Guess it can stop the war there... But well, Greece and Scandinavia are always easy to overule.