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.
Peace may be the third of Saint Paul’s nine fruits of the Spirit, but it is foremost in the minds of many today.
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.
Catholic Sensibility 
In case anyone finds a Greek lexicon helpful in understanding the different Scriptural senses of eirene….
http://biblesuite.com/greek/1515.htm