it's a child-like analysis intended for juvenile minds that want to differentiate periods of time into a false dichotomy of "war" and "peace", as though wars have definitive ends and there exists states of non-war between periods of states of war. only an ignorant child would see the world in those terms.
yes, war is perpetual. peace does not exist. that's pretty fundamental. you have to get over that basic point of fact if you want to sit at the grown up table.