What in the hell are you talking about? Arabs are Semites, and their worldview is as different from ours as it is from the Chinese or the Russians. We can barely translate each other's languages successfully much less understand the way other groups see the world from their historical and cultural perspective.
OK, Joooooooos are Semites, too, and since so many conspiracy theorists blame them it was a logical assumption. Instead of being coy, why don’t you tell us what you think happened. Do you think there was another Islamic government involved? Do you think government agencies allowed this to happen intentionally? What, specifically, do you find “unbelievable”?