There is no external threat to Europe in the conventional way.
My opinion is that the biggest threat are the problems created by mass-immigration from the Middle East and Africa. I could say a lot of things about this, but will not, because of PC self-censorship. But it was not a wise idea to allow the situation to develop as it has.

Croc: EU is no more "globalisation" than Canada, the USA, the Russian Federation etc! In fact, less so, since the states are still single entities to the outside world. For example, California is much bigger than the average European country.
Actually I should probably say economic globalisation when I rant, because that's what I disagree with, not cooperation between states with a shared history and culture like Europe.

Interesting comments about the economics of war, by Ramil. If so, there is also a war against those countries that are under economic sanctions, right?