Russia. Russia keeps Russia out of a united Europe.

It’s pretty easy to understand. It’s like that annoying uncle that you don’t invite to parties because all he does his reminisce about the good old days when he was da shit. And he gets belligerent when people point out that all he does now is drink vodka and pump gas and lie about everyone and everything to make himself feel better because he can’t face the fact that the world has moved on and no one gives a shit about his crazy ideas.