By contrast, the fruit of the Spirit is love, joy, peace, patience, kindness, generosity, faithfulness, gentleness, and self-control. There is no law against such things.
The Galatians were a tough crowd for the Apostle to the Gentiles. His contentious relationship with them comes out all over in his letter. That he was able to ascribe this litany of virtues and urge all parties to consider them–this is itself a witness to peace.
When world leaders are unwilling to treat with peace, may they be open (at least) to the virtues of patience and self-control. And most of all, let all believers be guided so.