that all injustice be repaired, the reign of right restored". Later he appealed to the Allies to spare Rome from aerial bombing, and visited wounded victims of the Allied bombing of 19 July 1943. Widening conflict Pius attempted, unsuccessfully, to dissuade the Italian Dictator Benito Mussolini from joining Hitler in the war. In April 1941, Pius XII granted a private audience to Ante Pavelić, the leader of the newly proclaimed Croatian state (rather than the diplomatic audience Pavelić had wanted). Pius was criticised for his reception of Pavelić: an unattributed British Foreign Office memo on the subject described Pius as "the greatest moral coward of our age". The Vatican did not officially recognise Pavelić's regime. Pius XII did not publicly condemn the expulsions and forced conversions to Catholicism perpetrated on Serbs by Pavelić; however, the Holy See did expressly repudiate the forced conversions in a memorandum dated 25 January 1942, from the Vatican Secretariat of State to the Yugoslavian Legation. The pope was well-informed of Catholic clergy involvement with the Ustaše regime, even possessing a list of clergymembers who had "joined in the slaughter", but decided against condemning the regime or taking action against the clergy involved, fearing that it would lead to schism in the Croatian church or undermine the formation of a future Croatian state. Pius XII would elevate Aloysius Stepinac—a Croatian archbishop convicted of collaborating with the Ustaše by the newly established Yugoslav Communist regime—to the cardinalate in 1953. Phayer agrees that Stepinac's was a "show trial", but states "the charge that he [Pius XII] supported the Ustaša regime was, of course, true, as everyone knew", and that "if Stepinac had responded to the charges against him, his defense would have inevitably unraveled, exposing the Vatican's support of the genocidal Pavelić". Throughout 1942, the Yugoslav government in exile sent letters of protest to Pius XII asking him to use all possible means to stop the massacres against the Serbs in the NDH, however Pius XII did nothing. In 1941, Pius XII interpreted Divini Redemptoris, an encyclical of Pope Pius XI, which forbade Catholics to help Communists, as not applying to military assistance to the Soviet Union. This interpretation assuaged American Catholics who had previously opposed Lend-Lease arrangements with the Soviet Union. In March 1942, Pius XII established diplomatic relations with the Japanese Empire and received ambassador Ken Harada, who remained in that position until the end of