The press sometimes misrepresents the Pope as a pacifist. Of course he wants peace. We all want peace. But sometimes peace has to be bought with the lives of soldiers in a just war. It seems to me that is what he is saying here.
True soldiers do not give their lives to perpetuate war. They give their lives in the hope that a just peace can be won and innocents can be protected by fighting a just war.
Amen.