To put it politely, the above is shortsighted. The Third Reich was engaged in genocide carried out with conveyor belt efficiency. It murdered tens of millions of people in the name of racial purity. Enslavement was merely means of temporary cheap labor - make no mistake about it, the goal was extermination of those it deemed genetically imperfect. FDR, fortunately, understood exactly what was at stake - humanity as a whole was at stake.