It has nothing to do with religious belief's. They may use them to try and justify actions but religion is not nor ever has been the cause. It is about greed, resources, land, ownership of another countries assets. Was Stalin a religious person?

big stretch here but again plays into the hate of all faiths.

Interesting note, free will is a great thing. Science is exactly why I came to believe. My knowledge of Mathematics, chaos theory .. for everything to happen as it is points me to a higher power. The only explanation for me. Such order out of such random chaotic events is too small to be explained otherwise. But again that is just me