Here's what "Christian" historians think of the Mufti:
Hitler's Mufti | Catholic Answers
Recent work by historians and apologists has revealed that an influential, international religious leader was also an ardent supporter of Adolf Hitler. His name was not Pope Pius XII but Hajj Amin al-Husseini. This Grand Mufti of Jerusalem recruited whole divisions of fanatics to fight and kill in the name of extremism.
Revered in some circles today as one of the fathers of modern radical Islam, al-Husseini has been the subject of a number of modern studies. Scholars such as David Dalin, John Rothmann, Chuck Morse, and others have courageously brought al-Husseinis actions to light. "Hitlers Mufti," as many have called him, had a direct hand in some of the darkest moments of the Holocaust, the slaughter of tens of thousands of Christians, and the formation of some of the most hate-filled generations of modern history. Al-Husseini is a testament to the way that evil finds evil.
Soon after the appointment of Hitler as German Chancellor in 1933, the German Consul-General in Palestine, Heinrich Wolff, expressed his belief that many Muslims in the Holy Land would be supportive of the new Nazi regime. This view was confirmed when Wolff met with al-Husseini and other radical local leaders. For al-Husseini, the anti-Jewish policies of the Nazis were appealing, and he hoped for German help in ousting the British from Palestine.
Al-Husseini deepened his outreach to the Nazis in 1937 when he met with two Nazi SS officers, including Adolf Eichmann, one of the architects of the Holocaust in Damascus, Syria. The SS representatives had been sent at the express order of Reinhard Heydrich, the deputy head of the SS under Heinrich Himmler and chief of SS Intelligence and the Nazi security services, including the Gestapo. Heydrich recognized immediately that al-Husseini was a potentially valuable asset for Nazi interests in the Middle East and worked to cultivate him.
Four years later, al-Husseini threw his support to a pro-Nazi revolt in Iraq against the British-backed prime minister, Nuri Said Pasha. Going to Baghdad, al-Husseini issued a fatwa for a jihad against the British.
The Mufti Meets the Führer
Over the next few days, al-Husseini drafted a proposed statement of an Arab-Axis cooperative effort by which the Axis powers would recognize the right of the Arabs to deal with Jewish elements in Palestine and in the other Arab countries according to their own interests. The declaration was approved by Mussolini and sent to the German embassy in Rome. Pleased with the declaration, al-Husseini was invited to Berlin as an honored and useful guest of the Nazi regime. He arrived in Berlin on November 6 and met with Ernst von Weizsäcker, German secretary of state under Nazi Foreign Minister Joachim von Ribbentrop. Two weeks later, he met with von Ribbentrop himself, a prelude to his triumphant reception on November 28, 1941, with Adolf Hitler.
At their meeting, al-Husseini requested German assistance with the Arab independence movement and Nazi support in the extermination of any Jewish homeland. For his part, Hitler promised to aid that liberation movement, but went still further, promising that the aim of Nazi Germany would be the elimination of all Jews living under British protection once such territories had been conquered. This was described by al-Husseini in his own memoirs:
Our fundamental condition for cooperating with Germany was a free hand to eradicate every last Jew from Palestine and the Arab world. I asked Hitler for an explicit undertaking to allow us to solve the Jewish people in a manner befitting our national and racial aspirations and according to the scientific methods innovated by Germany in the handling of its Jews. The answer I got was: "The Jews are yours." (Ami Isseroff and Peter FitzGerald-Morris, "The Iraq Coup Attempt of 1941, the Mufti, and the Farhud")
The Axis Kept Man
For the Nazis, al-Husseini was an ideal propaganda tool, a powerful spokesman among radical Arabs, and an excellent instrument for their anti-Jewish campaign in Europe and in the Holy Land. Portrayed by the Nazis as the spiritual leader of all Islam, al-Husseini was given a grand formal welcome in Berlin. The official Nazi newspaper, Volkischer Beobachter, proudly published a photo of Hitler and al-Husseini, and Radio Berlin proclaimed on January 8, 1942 that the Grand Mufti of Jerusalem had consented to take part in the effort against the British, the Communists, and the Jews.
Satisfied with his newly concretized relations with the Nazis, al-Husseini chose to remain in the service of the Axis and settled in Berlin in a lavish mansion that had been confiscated from a Jewish family. The Nazis paid him a monthly stipend of 62,500 Reichsmarks (approximately 20,000 dollars), payments that continued until April 1945, when only the fall of Berlin to the Red Army ended Hitlers financial support. From his post, al-Husseini headed the Nazi-Arab Cooperation Section and helped build a network of German spies across the Middle East through his followers. Scheming for a desired dark future of Nazi-Islamic leadership, the Mufti founded an Islamic Institute in Dresden to provide training for young radical Muslims who would serve as chaplains for his field units and also head out across the Middle East and the world to sow the seeds of jihadism and anti-Semitism.
The Muftis Final Solution
Scholars have long studied how actively engaged al-Husseini was in the implementation of the Holocaust. There is no question that he supported the aims of the Nazis in perpetrating genocide and believed perversely that all Arabs should join that cause. He declared on German radio on March 1, 1944: "Arabs, rise as one man and fight for your sacred rights. Kill the Jews wherever you find them. This pleases God, history, and religion. This saves your honor. God is with you" (qtd. in Norman Stillman, "Jews of the Arab World between European Colonialism, Zionism, and Arab Nationalism" in Judaism and Islam: Boundaries, Communications, and Interaction: Essays in Honor of William M. Brinner).
According to the testimony of Adolf Eichmanns chief deputy Dieter Wisliceny (who was hanged for war crimes) the Mufti played a role in encouraging the Final Solution and was a close friend and advisor to Eichmann in the Holocausts implementation across Europe. Wisliceny testified further that al-Husseini had a close association with Heinrich Himmler and visited the gas chambers at Auschwitz, where he exhorted the staff to be even more dedicated in its important work.