https://www.rte.ie/news/dublin/2018/0412/953963-israel/

As far as the Grand Mufti: https://en.wikipedia.org/wiki/Amin_al-Husseini there's a lot to unpack there, but some cliff notes: he was a war criminal to be tried at the Nuremberg Trials, but was protected by French sympathizers in a complex extradition process. He allied with the Axis powers and lead various campaigns for the Germans in the middle East. Some of his highlights:

Subsequently, the Mufti declared in November 1943

It is the duty of Muhammadans [Muslims] in general and Arabs in particular to ... drive all Jews from Arab and Muhammadan countries... . Germany is also struggling against the common foe who oppressed Arabs and Muhammadans in their different countries. It has very clearly recognized the Jews for what they are and resolved to find a definitive solution [endgültige Lösung] for the Jewish danger that will eliminate the scourge that Jews represent in the world.

At the Nuremberg trials, one of Adolf Eichmann's deputies, Dieter Wisliceny, stated that al-Husseini had actively encouraged the extermination of European Jews, and that al-Husseini had a meeting with Eichmann at his office, during which Eichmann gave him a view of the current state of the "Solution of the Jewish Question in Europe" by the Third Reich. (This part is disputed by some historians since the extermination of the Jews began before the meeting, but the sentiment expressed was known)

Al-Husseini's first biographer, Moshe Pearlman, described him as virulently antisemitic, as did, a decade and a half later, Joseph Schechtman. There is no doubt Husseini became robustly judeophobic and convinced himself, using arguments based on Biblical, Talmudic, and Quranic passages, that Jews were enemies of God, engaged in a global conspiracy, and practicing the ritual use of Christian blood. [i]n any case, there is no doubt that Haj Amin's hatred was not limited to Zionism, but extended to Jews as such. His frequent, close contacts with leaders of the Nazi regime cannot have left Haj Amin any doubt as to the fate which awaited Jews whose emigration was prevented by his efforts. His many comments show that he was not only delighted that Jews were prevented from emigrating to Palestine, but was very pleased by the Nazis' Final Solution'.