The next month , Carr 's relations with the Polish government were further worsted by the storm caused by the discovery of the Katyn Forest massacre committed by the NKVD in 1940 . In a leader entitled " Russia and Poland " on 28 April 1943 , Carr blasted the Polish government for accusing the Soviets of committing the Katyn Forest massacre , and for asking the Red Cross to investigate
Katyn Forest massacre
Katyn massacre
E. H. Carr