[Monolith]

Originally Posted by article

In the past six months no fewer than four different outlets have revived the outrageous falsehood that it was the Nazis, not the Soviets, who murdered 20,000 captured Polish officers at Katyn in 1940. That Stalin-era lie, enforced at gun-point in post-war Poland, viciously aggravated the original crime. It was buried in 1990, with solemn Kremlin support.

It is interesting that two Croatian forensics took part in revealing the truth:

One of the great tragedies of the Second World War was the slaughter of 12,000 Polish officers in the Katyn wood (Poland) in 1940. Also a mass grave with more than thousand Ukrainian peasants and workers in Vinica (Ukraine), killed in 1938, was found by Germans. The Soviets accused Germans for these horrible crimes, and vice versa. Among leading European experts from 12 countries in pathological anatomy, two Croatian specialists were invited by the International Committee of the Red Cross to take part in the investigation in 1943: prof.dr. Eduard Miloslavic and prof.dr. Ljudevit Jurak. The result was that this cold-blooded mass slaughter was committed by the Soviets. Prof.dr. Miloslavic emigrated in time to the USA, while prof. Jurak remained in Zagreb, and was imprisoned on the demand of the Russian NKVD by the Yugoslav communists in May 1945. It was offered to him that he would not be accused as a military criminal and that his life would be spared if he declared that his report for the Red Cross Committee had been signed under pressure. He refused to do so, fully aware of the consequence.