The whole "Hitler's Pope" tale is a KGB disinformation operation. The highest ranking East bloc intelligence agent ever to defect to the West, Ion Mihi Pacepa, who himself participated in the operation, says so. Pacepa even reports the detail that Andropov regretted the operation to him after learning of Hitler's plans to arrest or kill Pius XII.
Put that together with the overwhelmingly favorable testimony of people who actually lived through the events in question -- like the chief rabbi of Rome, Angelo Roncalli (later Pope John XXIII), Golda Meir, Pinchas Lapide, etc. -- and it's clear that "Hitler's Pope" is a dirty slander.
Those are the facts of the matter. "Ping for later"? Which of those facts do you think will change ... "later"?
"If I have told you heavenly things and you do not believe, how can you believe if I tell you earthly things?"