Those who repeat the line that the EU prevented wars in Europe seem to forget what happened in the Balkans They were not part of the EU. The reasoning is that

Those who repeat the line that the EU prevented wars in Europe seem to forget what happened in the Balkans They were not part of the EU. The reasoning is that if you form a union where there is a large amount of economical interdependence, you think twice about starting a conflict with other members of your union. The collapse of their economy means the collapse of your economy.