Here's a snippet about the kind of man he was:
"According to his sister, Eleanor, Dulles had "at least a hundred" extramarital affairs, including some during his tenure with the CIA.[12]"
" In April 1933, Dulles and Norman Davis met with Hitler in Berlin on State Department duty. After the meeting, Dulles wrote to his brother Foster and reassured him that conditions under Hitler's regime "are not quite as bad" as an alarmist friend had indicated."
"As the Third Reich neared defeat in 1944 and 1945, Dulles and his law firm, Sullivan & Cromwell, worked with several German industrialists to move Nazi funds out of Germany's territory.[32] Heinrich Himmler, Reichsführer of the German SS, began transferring Nazi wealth, including that stolen from Jewish Holocaust victims, to other countries to support a postwar "Fourth Reich." Brigadeführer Kurt Baron von Schröder, who cooperated with Himmler on his plan, was a business associate of Dulles. Dulles and Schröder created companies through which they moved Nazi wealth to other nations."
John Foster Dulles, later Secretary of State under Ike, was not any better:
"After the Nazi Party came to power, Dulles expressed sympathies for Adolf Hitler, requiring his legal staff in Berlin to sign "Heil Hitler" on all of Sullivan & Cromwell's outgoing mail; fearful of the optics, Sullivan & Cromwell's junior partners forced Dulles to cut all business ties with Germany in 1935."
https://en.wikipedia.org/wiki/Allen_Dulles
https://en.wikipedia.org/wiki/John_Foster_Dulles