Remember when the Russians tried to blame the Katyn Forest massacre on the German ? then on the Ukrainian UPA !!!!
And you have any link to support your statement that "Russians tried to blame the Katyn on the Ukrainian UPA"?
I will wait for your support of what you just said.
As for "blaming the Germans", it was already discussed:
1. As you well know there were two investigations into Katyn. The first one was conducted in 1943 under a personal supervision of Dr Goebbels with the use of Poles under German occupation and American and British POW as witnesses. His investigation concluded that the Poles in a mass grave were shot by NKVD. Polish government in exile immediately agreed with it despite the fact there was no independent examination of the findings.
In 1944 the Soviets recaptured the area and themselves opened an investigation into Katyn. Polish Red Cross was asked to examine the evidence.
It was Polish Red Cross that first examined the victims in Katyn. Their conclusion: the victims were shot from German weapons; their hands were tied with the cord made in Germany; and the manner in which the victims were shot was consistent with that of the SS and not NKVD.
2. According to the NKVD instructions on the order of execution, the bodies of executed should not have any documents, articles of outer clothing and other material evidence to establish their identity or the date of execution. In Katyn the executed had IDs on them.
3. 1988 Polish members of the Joint Commission on the complex issues admitted testimony P. Bredou and claimed that in the fall of 1941 in the Katyn forest, the Nazis executed Polish officers from the "second wave", ie, interned in the summer of 1940 in Lithuania and Latvia.
4. German citizen, a former prisoner of «Tegel» William Gaul Schneider in April 1947 addressed the Polish Ministry of War, and made a statement about the perpetrators of the crime in Katyn. In June of that year he gave the relevant evidence to the prosecutor Captain Ahtu Savitsky in the American zone of occupation.
Schneider said that in the winter 1941-1942 he was in the same cell with condemned to death German officer of «Regiment Grossdeutschland». Sergeant Schneider said that in the late autumn of 1941, more precisely, in October of this year, the regiment has committed mass murder of more than ten thousand Polish officers in the forest under Katyn "(Archive of Foreign Policy. Fund 07, opis 30a, Folder 20, Case 13, pp. 23).
5. French historian and television journalist Alain Decaux in the mid 60-s in his study "Katyn: Hitler or Stalin " cites evidence of René Kulm, a former prisoner of the German Stalag II. In the end of 1941 R. Kulm met Polish captain Venzenskogo just brought to the camp by the Germans from the East. Venzensky said that "Fritzes there, in the East, committed a heinous crime ... SS destroyed almost all of Polish elite."
A. Decaux also mentions the Frenchwoman Katerina Devil, known as the Red Army lieutenant. She is one of the first who visited Katyn after its liberation from the Nazis, and spoke with local residents before the arival of NKVD. She was able to visit Hitler's "Museum of Soviet atrocities", where the so-called evidence of the Katyn graves was submitted to.
Devil was struck by the fact that in one cell of a museum with real evidence, she found a picture of her friend Zbigniew Bogutsky and a copy of his letter to his mother dated 6 March 1940. After the war, she met Z. Bogutsky in Poland, and he claimed that in March 1940 he did not write and could not write a letter to his mother. "At this point I (the Devil) realized that Katyn - is entirely fabricated by the Germans."
6. The famous letter by Beria written on 4 pages under scrutiny proved to be a forgery typed out at different times on few typewriters and without the customary identification marks.
7. Sent to Poland in 1995 documents of suspect Katyn victims were lost by Polish side.
8. In early 1990s Moscow handed over to Poland all the original documents on Katyn.
9. In 2002 Poland asked Russian government for compensation and was advised to take matter to international tribunal.
10. In 2008 Poland’s Institute of National Remembrance has lost all the original documents on Katyn.
11. Poland never took the case to tribunal.
Don't you find it a touch disconcerting at how much of your "historical knowledge" comes straight from Dr Goebbels?