Today, dear brothers and sisters, I wish to make add my voice to the cry which rises up with increasing anguish from every part of the world, from every people, from the heart of each person, from the one great family which is humanity: it is the cry for peace! It is a cry which declares with force: we want a peaceful world, we want to be men and women of peace, and we want in our society, torn apart by divisions and conflict, that peace break out! War never again! Never again war!
— Pope Francis. See here about his call for September 7.