The UK, France and German leaders meet and conclude, "There is no plausible alternative explanation" as they all agree it MUST have been Russia.
In my opinion that is just another way of saying, they don't have any evidence whatsoever but they like the idea that it was Russia.
Well, I'm sorry but I need a bit more than that before we risk a war with Russia and then WW3.
I don't believe a word that comes out of any of these mouths