A few questions about Pope Pius XIIs WW2 involvement

From Wikipedia.com:

Pius XII's role during World War II has been a source of major controversy. What is universally agreed is that Pope Pius XII followed a policy of public neutrality during the Second World War mirroring that of Pope Benedict XV during the First World War. Pius's main argument for that policy was twofold. That public condemnation of Hitler and Nazism would have achieved little of practical benefit, given that his condemnation could effectively be censored and so unknown to German Catholics (who in any case had been told as early as the early 1930s by the German Roman Catholic hierarchy that Nazism and Catholicism were incompatible). Secondly, Pius argued that had he condemned Nazism more aggressively, the result would have been repression of Roman Catholicism within Nazi Germany, making low level work against Nazi policies at parish and diocese level difficult, in turn cutting off secret escape routes which were used by many Jews, Gypsies and homosexuals to escape deportation to Nazi extermination camps. Historians differ in their acceptance of these justification for Pope Pius XII's policies.

Adolf Hitler made the observation that "[Pius] is the only human being who has always contradicted me and who has never obeyed me." Historians in general differ as to whether or not Pope Pius XII did enough to prevent the Holocaust and save lives, and indeed whether any intervention by him would have any impact on the number of deaths caused by Nazi policies.

Joseph Goebbels was clear about the Reich's attitudes toward the Roman Catholic Church. His 26 March 1942 entry into his diary reads, "It's a dirty, low thing to do for the Catholic Church to continue its subversive activity in every way possible and now even to extend its propaganda to Protestant children evacuated from the regions threatened by air raids. Next to the Jews these politico-divines are about the most loathsome riffraff that we are still sheltering in the Reich. The time will come after the war for an over-all solution of this problem."