Personally I find it incredibly likely purely based on the EU’s decision making. If EU institutions aren’t controlled largely by American assets… why would they keep making decisions that benefit the US and hurt the EU?

At least several high-profile EU officials also have very close familial ties to American officials or businessmen.

They’re either foreign agents, or grossly incompetent. Not all, of course, but a good number.

As for Russia, I’d say it’s way too weak to have anywhere close to that much influence over a richer, more powerful, more populous territory. I’m sure it does have some, but nowhere near that level.