Nonsense. There will be no dictatorships as a result of nationalism. You are just perpetuating the propaganda of the Left who want to centralize power in Brussels and eliminate national sovereignty. The UK is having a vote in 2017 to determine whether they stay in the EU. The migrant crisis may cause many other countries to follow or at least renegotiate the EU founding documents.
I see no reason to discount 2000 years of Euro history because we are the modern man. Everyone thought they were the modern man and above that until the horses rode, charriots clanked and tanks rolled across Europe too.
You see gloom and doom. I see the people challenging the government and regaining control over their national destinies. The EU bureaucracy has become the real tyrant.
Well you are wrong about a lot of things. So be it.