Oh, come now.
We want to make war safe. Let's get rid of nuclear weapons. Hell, lets get rid of "weapons of mass destruction." Let's impose rules of contact that limit attacks on civilian targets, cultural or religious structures.
Let's make war safe, clean, and FUN. Hell, let's make war so much fun that EVERY country will want to have one.
Do people think things through?
War should be so horrible, so terrifying, that grown men will wet their pants at the mere thought of it. The countries will avoid it, and if any leader is so insane as to contemplate it, the people will rise against him. The reason North Korea tolerated Kin Jong Un is that the last time they threatened us with nuclear weapons, we did not attack.