[raducu]

And the purpose of the "leak" is?

A KGB guy just set out to write a rand that demoralizes the russians and gives hope to the ukrainians?

I'm all on the side of the ukrainians, but I'm 99% sure the document is not real.

[hackeraccount]

"Make peace, you fools!" German field marshal Gerd von Rundstedt July 1944

That's why a KGB guy might write something like this - the intent wouldn't be to demoralize russians - it'd be to save Russia.

It still might be propaganda/disinformation but I wouldn't reject it out of hand.