Hmmmm, ya there's no way in hell FDR would have ever agreed to anything of that nature. It had been in his plans to accept no terms except for UNCONDITIONAL SURRENDER. This occured very early in the war and is documented by the press at the Casablanca Conference on January 24, 1943, which was attended by FDR, Winston Churchill, General Henri Giraud, Charles DeGaulle and other Anglo-American Chiefs of Staff.
http://www.sourcewatch.org/index.php?title...le=Allen_Dulles
During the 1930s Allen Dulles gained much experience in Germany, which made his selection in 1942 as station chief in Berne, Switzerland, for the newly formed Office of Strategic Services a logical one. Dulles supplied his government with much sensitive information about Nazi Germany. In 1945, he played a central role in negotiations leading to the unconditional capitulation of German troops in Italy.
http://aia.lackland.af.mil/homepages/pa/sp...Jul06/atc14.cfm
This was taken from a page regarding Dulles. I strongly doubt that he was arranging to keep some Nazi's in power because of his STRONG, and I repeat STRONG hatred of the Nazi's even before we were in the war against Germany.
https://www.cia.gov/csi/books/oss/art06.htm
An early foe of Hitler, Dulles joined the fight against Nazi Germany well before Pearl Harbor. He had persuaded Sullivan & Cromwell to close its Berlin office in 1935...
Hmmmm... I hate to say it, but I wouldn't trust anything out of the Soviet Union. That's my opinion. 
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"