Truth is the primary value that we all share in peace. All conflict is derived from lies.

All religion has two parts, belief and rules for social conduct.

Conflict with religion comes when belief is claimed as truth. If that were a principle, the existence of contradictory beliefs would render truth meaningless, leaving only conflict.

In the past, when Christianity was as extreme as Islam, there was far less immigration. I suspect that the fact that God in Christianity is the "spirit of truth" has had a significant influence on our disdain for conflict. People of all religions benefit from it but the west is far from conflict free.

I suspect the fact that the west has  invaded, colonized and undermined self rule in mostly Islamic nations for over 100 years has impeded conflict free evolution in those nations. Our armies are there among proud people who act as we might if the situation was reversed.