When we have inner peace, we can be at peace with those around us. When our community is in a state of peace, it can share that peace with neighboring communities.
No weapon has ever settled a moral problem. It can impose a solution but it cannot guarantee it to be a just one. You can wipe out your opponents. But if you do it unjustly you become eligible for being wiped out yourself.
Late have I loved Thee, O Lord; and behold, Thou wast within and I without, and there I sought Thee. Thou was with me when I was not with Thee. Thou didst call, and cry, and burst my deafness. Thou didst gleam, and glow, and dispell my blindness. Thou didst touch me, and I burned for Thy peace. For Thyself Thou hast made us, and restless our hearts until in Thee they find their ease. Late have I loved Thee, Thou Beauty ever old and ever new. Thou hast burst my bonds asunder; unto Thee will I offer up an offering of praise.
When Christ was about to leave the world, He made His will. His soul He committed to His father; His body He bequeathed to Joseph to be decently interred; His clothes fell to the soldiers; His mother He left to the care of John; but what should He leave to His poor disciples that had left all for Him? Silver and gold He had none; but He left them that which was infinitely better, His peace.
Buried was the bloody hatchet; Buried was the dreadful war-club; Buried were all warlike weapons, And the war-cry was forgotten. Then was peace among the nations.