What good can come from war? There is something you want so you take it; someone wants something from you so you defend yourself. No matter what the circumstance at the heart of every war these simple motive remain. And when you have what you set out to gain you end up with damaged infrastructure, and lost lives. In the past there were things called glory and heroism, when a human being would sacrifice themselves for the survival of the whole, or overcome impossible odds. These examples of human potential could be seen as good derived from war; but such things will soon become inexistent as wars begin to be fought using unmanned machines and snipers laying miles away from their target. Then when the dust has cleared you are left with a debasing bill and a new enemy. Alternatively when using diplomacy one is left with no damaged building or dead youth as well as with at least some of whatever they desired. With no saving grace and a clearly better substitute it should now be obvious no good can come from war.
But I shouldn’t have had to tell you that.