Pope Francis
Fratelli Tutti §261
Fratelli Tutti: On Fraternity and Social Friendship
261 Every war leaves our world worse than it was before. War is a failure of politics and of humanity, a shameful capitulation, a stinging defeat before the forces of evil. Let us not remain mired in theoretical discussions, but touch the wounded flesh of the victims. Let us look once more at all those civilians whose killing was considered “collateral damage”. Let us ask the victims themselves. Let us think of the refugees and displaced, those who suffered the effects of atomic radiation or chemical attacks, the mothers who lost their children, and the boys and girls maimed or deprived of their childhood. Let us hear the true stories of these victims of violence, look at reality through their eyes, and listen with an open heart to the stories they tell. In this way, we will be able to grasp the abyss of evil at the heart of war. Nor will it trouble us to be deemed naive for choosing peace.
Source: Fratelli Tutti (Vatican.va)