Religion certainly fuelled violence in the early days, but I think it wasn't long before politics intertwined into the mix.
Once the nomads in tents found oil in the sand...…….it took a turn for the worst. Without oil, the middle east would still be in the middle ages with tent villages.
So the current mix of religion, politics, oil and greed is why we're in the state we're in.
And the nutcases who seek world domination.