Also try reading an earlier work, “Katyn: A Crime Without Parallel”. I was told about Katyn since childhood, but this book was the first in my experience to document the Soviets’ blaming the Nazis (who were actually telling the truth when they unearthed the mass graves in 1943).
Meanwhile,
“Russki! Eko chortovo otrodye!”
There was a parallel to Katyn, it was called "Palmiry."