Have you studied the secular origins of the Anti-Semitism? Or would you find that the main reason for Anti-Semitism was Christianity, and, to a lesser extent, Islam after the nation of Israel was established?
I am witnessing, before my very eyes, a Christian transformation in the Ukraine. When I was growing up there (it was part of the USSR then), Christians were very pacifist. But now, after the US (a Christian nation, overwhelmingly) sponsored a Maidan revolution, Ukraine's Christians have (surprise!) transformed! One of my childhood friends is now a volunteer, fighting for a pro-Ukraine batallion. The whole "Anti-terrorist-Operation, ATO" in the Eastern Ukraine was began by none other than Acting Ukraine President Turchinov! Himself a practising Baptist!
Oleksandr Turchynov - Wikipedia
I don't mean that religion causes was, only that nothing in Christianity forbids him to start a war. Couple that with the Old Testament belief that God chooses certain people and gives them territory or special status, and you have a climate that's ripe for war.
Summary of the my argument is as follows. Old testament clearly supports and encourages war. Nothing in the New testament explicitly contradicts this notion, allowing many Christians to support war(s). Christians were very tough on heretics, because, in their view, heretics were responsible for Christians straying from the truth and ending up in eternal hell.