Hey, one of the bits of forensics that was seriously floated about was “Well, there was a Word document with Russian settings on it and registered to Felix Dzerzhinsky[1]” so a a few regexps with Russian words might be enough.
But no, you’ve the right of it, we don’t have the evidence. We do have the word of the intelligence agencies but I personally trust those as far as I can throw New Jersey.
[1] I’d have held out for Viktor Kagebeovitch, personally, but fine.
