Regarding the Churban, the Abarbenel’s opinion is that Bnei Yishmael were also helping the Romans…..
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Maurice Roumani, The Case of the Jews from Arab Countries: A Neglected Issue, (Tel Aviv: World Organization of Jews from Arab Countries, 1977):
Decrees ordering the destruction of synagogues were enacted in Egypt and Syria (1014, 1293-4, 1301-2), Iraq (854-859, 1344) and Yemen (1676). .., Jews were forced to convert to Islam or face death in Yemen (1165 and 1678), Morocco (1275, 1465 and 1790-92) and Baghdad (1333 and 1344).
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Patterson, D. (2010). A Genealogy of Evil: Anti-Semitism from Nazism to Islamic Jihad. United States: Cambridge University Press, p.55:
Then there is Ibn Tumart (c.1080–c.1130), who, according to the medieval sage Abraham ibn Daud, undertook a campaign of extermination against the Jews, when he “decreed apostasy on the Jews, saying, ‘Come, and let us cut them off from being a nation; that the name of Israel may be no more in remembrance.’ Thus he wiped out every last ‘name and remnant’ of them from all his empire, from the city of Silves at the end of the world until the city of al-Mahdiya.”
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Lewis, B. (1984). The Jews of Islam . New Jersey: Princeton University Press, p. 168:
From the late eighteenth century through the nineteenth century, expulsion, outbreaks of mob violence, and even massacres became increasingly frequent. Between 1770 and 1786 Jews were expelled from Jedda, most of them fleeing to the Yemen.
In 1790 Jews were massacred in Tetuán, in Morocco;
in 1828, in Baghdad. In 1834 a cycle of violence and pillage began in Safed.
In 1839 a massacre of Jews took place in Meshed in Iran followed by the forced conversion of the survivors, and a massacre of Jews occurred in Barfurush in 1867.
In 1840 the Jews of Damascus were subject to the first of a long series of blood libels in many cities….