David Kertzer has studied and written about Italy, the Catholic Church, Nazism, communism, and fascism for over 40 years. His latest of 13 books is about the secret history of Pope Pius XII, Mussolini, and Hitler. It's titled "The Pope at War." In 2020, Pius XII's archives were finally open in the Vatican. Brown University professor Kertzer, according to Random House, his publisher, "paints a new, dramatic portrait of what the pope did and did not do as war enveloped the continent and as the Nazis began their systematic mass murder of Europe’s Jews." 

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