Debunking Russian claims
I would say that Russian claims debunk themselves by the very way they are stated. For example, after each massacre is found, a Russian official immediately says: "Our troops didn't do this!" How can they know for sure that their troops definitely didn't do this? Someone who was actually sincere would not claim certainty about a negative. A sincere response would be something like: "To the best of my knowledge, I do not know of any order given to do this, but I cannot discount the possibility that some of our troops might have been acting outside orders."
That Russian officials can claim without investigation that
none of their troops acted outside orders:
Bucha killings: Russian UN envoy rejects Russia's responsibility
is a warning sign of intrinsic Turanian dishonesty.