War is a constant throughout human history, and has human nature really changed in all that time? No. It’s been almost eighty years since we have had a major conflict so we are certainly due. The Gospel has its place certainly, but ultimately man makes the situation here on earth. Free will. Perhaps we have become too rich, too free. But, as always and again with respect to history, it is the innocent who will suffer most terribly.
God places people where they need to be.