None other than Kurt Waldheim.
That’s what the USA got for not staying longer to de-Nazify both Germany and Austria . . . how is it that anyone over here thought that the process could be handed over to the natives a mere two years after the war? who subsequently unilaterally declared it “over” (not “complete”) three years after that?
That was as done as it could be, given that everyone just wanted to go home after the war, and the USSR remained in force just over the frontier — the key postwar move to make was to snuff them as they pop their heads up into prominent political positions.