Remember Tams' 'someone is getting put in cattle cars' post?

Little further along those lines:
The city fighting we’d see in Europe would look like what we saw in Sarajevo ten years ago. You know, ragtag bands of men with no uniforms, stolen weapons, and a desire to kill anybody who looked Muslim (or on the Muslim side, European).
...
Want to take the worst-case a little further? Both countries border Germany, which might feel the very legitimate need to march in to restore Ordnung. I think we all know what usually happens once the Germans start goose-stepping through their smaller neighbors.

No, the result wouldn’t be World War III (or V?). But Europe could very well become Bosnia on a continental scale, with all the devastation, mass graves, and ethnic cleansing that implies. You can bet, at best, there would be a whole lot of people put at gunpoint onto refugee boats bound for North Africa and the Levant. Assuming, of course, the Europeans win in such a scenario. If not, the poor refugees would speak languages much like our own, and be bound for our own shores – just like Will suggested.

Me, though, I’d put my money on the Europeans winning a war of mass, mechanized murder.

After all, they invented it.