Winston Churchill disagrees. I refer to his thoughts on the matter, quoted in the article.

Stalin was a savage man leading his country during a savage period in human affairs.

The hysteria that erupts whenever his role in the victory of the Soviet Union is mentioned today conveniently elides the crimes committed by his peers in the name of democracy. The Bengal Famine in British-controlled India in 1943, Hiroshima and Nagasaki in 1945, and at wars end the rehabilitation of former leading Nazis in the name of anti-communism.