Liberal historians, which is most of them, love Roosevelt, so they ignore his massive betrayal of Eastern Europe at Yalta. From James Bovard at fff.org:
This year is the 75th anniversary of the end of World War Two. One of the biggest frauds of the final stage of that war was the meeting at Yalta of Soviet dictator Joseph Stalin, British Prime Minister Winston Churchill, and President Franklin Roosevelt. Yalta has become a synonym for the abandonment of oppressed people and helped inspire the 1952 Republican campaign theme, “20 years of treason.”
The American media uncorked a barrage of tributes to Roosevelt on the 75th anniversary of his death in April. CNN, for instance, trumpeted Roosevelt as “the wartime president who Trump should learn from.” But there was scant coverage of one of his greatest betrayals.
Roosevelt painted World War II as a crusade for democracy — hailing Stalin as a partner in liberation. From 1942 through 1945, the U.S. government consistently deceived the American people about the character of the Soviet Union. Roosevelt praised Soviet Russia as one of the “freedom-loving nations” and stressed that Stalin is “thoroughly conversant with the provisions of our Constitution.” But as Rexford Tugwell, one of Roosevelt’s Brain Trusters and an open admirer of the Soviet system, groused, “The Constitution was a negative document, meant mostly to protect citizens from their government.” And when government is the personification of benevolence, no protection is needed.
Harold Ickes, one of Roosevelt’s top aides, proclaimed that communism was “the antithesis of Nazism” because it was based on a “belief in the control of the government, including the economic system, by the people themselves.” The fact that the Soviet regime had been the most oppressive government in the world in the 1930s was irrelevant, as far as Roosevelt was concerned. As Georgetown University professor Derek Leebaert, author of Magic and Mayhem, observed, “FDR remarked that most of what he knew about the world came from his stamp collection.”