It is well that war is so terrible, otherwise we should grow too fond of it.
These days we have no excuse, either to go to war, or to allow for conditions in which acts of war would be an appropriate (if desperate) response.
War remains a sign that irrational, irresponsible people are still allowed to take positions of power. And so long as we cannot stop that nonsense, it is an indictment of our species, that we may not be able to adequately civilize and govern ourselves with reason, rather are yet another species of ape that is going to run its course before going extinct.