You have very selective memory and present questionable facts.
Yugoslavia and Greece are not Catholic countries. What about Croatia - a Catholic country - that was executing Jews, Serbs, Greeks?
Why don't you just claim that Catholic church saved 10 million Jews? 100 million?
Nothing I've stated is false. It is easy enough to do a google search to find the truth--if you wished to find it. Obviously Pius was successful sometimes, unsuccessful at other times. Yugoslavia and Greece were under Italian control in the early part of the war--and Italians, influenced by the Church even under fascism, did what they could to limit Hitler's persecution of Jews. Your anti-Catholic animus is showing. I know it galls some to admit what is owed to a saintly man like Pius XII--but facts are facts.