NAZI -National Socialist Workers Party.
Hitler was a National Socialist. Stalin was an International Socialist. The left in the USA loved Hitler until he attacked the Soviet Union who they thought had a more pure form of communism planned.
Hitler hated Marx and Marxists. I know who and what the Nazis were; their mystical, Islamic, socialist philosophy had more to do with Capitalism and English Fabianism, as well as Italian socialist movements, than Marxism which was anathema.
Trying to equate Nazis with Marxist Communists is a big fail; their only common ground was socialism, but both views arose from different sources.
Stalin was a Marxist - call him an “International Socialist” if you want, but that changes nothing - Stalin was not a Nationalist, but a “Russianist”, if you will.