May it be Your will, Adonai our God and God of our ancestors, that You abolish all wars and bloodshed from this world and extend a great and wonderful peace in the world. Nations shall not lift up the sword against one another, neither shall they learn to make war any more. May all the inhabitants of this universe acknowledge the one great truth; that we have not come into this world for friction and dissension, nor enmity and jealousy and vexation and bloodshed. We have come into the world solely that we might know You, eternally blessed One.
And therefore have mercy upon us that through us the written word will become a reality. "And I will grant peace in the land, and you shall lie down untroubled by anyone; I will give the land respite from vicious beasts and no sword shall cross your land." (Lev. 26:6) "But let justice well up like water, righteousness like an unfailing stream." (Amos.5:24) "For the land shall be filled with devotion to Adonai as water covers the sea." (Is. 11:9)
Based on the prayer of Rabbi Nachman of Bratslav, from Siddur Ha'avodah She'ba'lev, Service of the Heart.