I respect you @louisthomas but I kindly disagree.
Look at history of europe. War after war after war. European union is the only reason why this time it's safe here and fighting is happening elsewhere.
If EU will fall apart then I can easily imagine that europe would again become battleground.
EU is not perfect, but it keeps us safe. That's the reality of it. If EU will start falling apart then strong and firm leaders will take over and military will be rulling this part of the world for very very long. That's just the way it always is whenever unrest is growing.
I can only pray that EU would last as long as possible.