The sad thing is that it was manufactured almost out of whole cloth by Hochhuth in 1963. People have taken it and run with it - most notably John Cornwell, who, however, has recanted most of his thesis set out in Hitler's Pope.
Having no divisions, and bearing some responsibility for many others’ safety based on his public pronouncements and behavior, Pius had few options that weren’t suicidal.
I’ll repeat: Secular American Jewish leadership’s kissing up to Roosevelt was cowardly in comparison to Pius’ actions.