Arabs and Jews trace their ancestry to the Book of Genesis. They were enemies back in the day and they are enemies now. Think of it as the penultimate Blood Feud. Let’s skip ahead into history. The time of the Crusades. Jews, Christians and Muslims are killing each other to decide who gets to rule Holy Jerusalem. If you take another look at the map I borrowed from the BBC you’ll notice that the same players are still there. This goes a long way to explain why the same Blood Feud still rages. I dare say that even if someone was to nuke Jerusalem the same groups would keep the Blood Feud going over the glow in the dark scraps.