What if Greece leaves the EU

[xTinx]

That's already in the works. Greece isn't really in a good place right now, economically and politically. I think it wouldn't really matter whether the country is there or not but if key EU players will pull out, then that's the biggest problems of all.

 

[CrowdedHighways]

I don't think they can do it, at least not just yet, at their position.