I don't agree with that. We had two powers dividing Europe in two, placing their own armies all over the place and doinglg their best to convince the other party that the world would be destroyed if it dared to attack. That was what brought us peace. Collaboration in the form of the various European international organizations was a consequence.

Making another war in Europe was basically impossible. We had one in Yugoslavia which was not aligned with the two blocks and anyway only after the USSR lost the cold war.