Abu Bakr al-Baghdadi, the leader of the Islamic State and self-proclaimed caliph, claims to be a descendant of Muhammad. That’s not surprising since most Sunni Muslims believe only a descendant from Muhammad’s tribe can be caliph. What makes Baghdadi’s lineage interesting is that he claims to descend from Muhammad through ten of the twelve Shi`i imams. That’s an unusual and sadly ironic genealogy for a man hellbent on eradicating the Shia. I mention Baghdadi’s genealogy in passing in my profile of him but you can read a fuller discussion of it in my forthcoming book, ISIS Apocalypse. There you’ll learn about the apocalyptic prophecies that his pedigree supposedly fulfills.