>> In addition, let there be peace on earth.
>
>too late...
It's never too late. The fact that there is a war going on right now doesn't mean that world peace can't ever be achieved. World Peace "is not only possible but inevitable".
However, it won't necessarily be easy. "Whether peace is to be reached only after unimaginable horrors precipitated by humanity's stubborn clinging to old patterns of behavior, or is to be embraced now by an act of consultative will, is the choice before all who inhabit the earth."
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)