You know it. I know it. Most of your readers know it. It's game-on. The people who experienced the Great Wars are dead. Their grandchildren don't read history books. Civility is rare. The tinder of resentment and lack of imagination lays about everywhere. Whatever starts it, it won't make any sense, as it didn't before WW1. That is, it won't make any sense to those who don't look at the over-all health of everyone in the economy. It will make sense to you. It will make sense to me. To your readers. The next spin-cycle of human depravity.