On June 3, 1945, Radio Moscow proclaimed that the leader of the Catholic Church, Pope Pius XII, had been “Hitler’s Pope,” mendaciously insinuating that he had been an ally of the Nazis during World War II. This was the first salvo of a calculated SMERSH [counterintelligence] operation designed to smear the reigning pope in the eyes of the world.
Radio Moscow’s insinuation fell flat as a pancake. Just the day before, on June 2, 1945, in an allocution to the Sacred College which was broadcast on Vatican Radio, Pius XII spoke of the “satanic specter of Nazism” and noted that his predecessor, Pius XI, called it what it really was: “the arrogant apostasy from Jesus Christ, the denial of His doctrine and of His work of redemption, the cult of violence, the idolatry of race and blood, the overthrow of human liberty and dignity.” […]
The June 1944 edition of a bulletin put out by the “Jewish Brigade Group” (US Eighth Army) carried a front-page editorial that completely undermined Radio Moscow’s insinuation: “To the everlasting glory of the people of Rome and the Roman Catholic Church we can state that the fate of the Jews was alleviated by their truly Christian offers of assistance and shelter.”
Lt. Gen. Ion Mihai Pacepa and Professor Ronald Rychlak, Disinformation: Former Spy Chief Reveals Secret Strategies for Undermining Freedom, Attacking Religion, and Promoting Terrorism (2013)