It is not hard to agree with Nicholas Georgescu-Roegen that
“the production of all instruments of war, not only of war itself, should be prohibited completely. It is utterly absurd (and also hypocritical) to continue growing tobacco if, avowedly, no one intends to smoke. The nations which are so developed as to be the main producers of armaments should be able to reach a consensus over this prohibition without any difficulty if, as they claim, they also possess the wisdom to lead mankind.”
It doesn’t take to much wisdom to realize that war is a true waste of resources and a stop to warring would not only mean less human beings being killed but also that resources could be used for good stuff, like helping people to live.