FDR was a commie-symp, pure and simple. That comes perfectly clear in the reading of The New Dealers' War (Thomas Flemming). Must reading.
I would also point to:
Felix Wittmer's The Yalta Betrayal from 1953, and
Mark Willey's Pearl Harbor - The Mother of all Conspiracies released in 1999. Willey's posited that the United States entry into WWII - by provoking Japanese - was really to save Stalin and the USSR.
Also, an interesting fact - the Wilson administation insisted - emphatically - that the SS LUSITAINIA was not carrying war materiel. It was not unitl the mid-1970's, when a British underseas film crew published photographs of her cargo (clearing showing munitions) that the US Archives "found" the original cargo manifest showing the "truth."
Note also that even today a myriad of Pearl Harbor documents - even some PURPLE messages - have never been released.
So, yes, the FDR history is very incomplete.