Fanatical madmen who want to kill everybody who won’t convert or be a slave, and they’re sober?
It’s a darn good thing that they don’t drink alcohol.
OTOH, maybe they’d all kill each other if we got them drunk enough. If they’re that mean when they’re sober, they’re guaranteed to be mean drunks.
Do not ask me how I know this.
It wouldn’t take much to get them started fighting.
It wouldn’s surprise me (too much) to learn that Zero is trying to do just that.
It wouldn’t take much to keep them fighting, recruiting jihadists from all over the world (particularly the young nimrods) into multiple competing gangs, er, militia groups. Make sure none of them acquire a decisive edge, or run out of ammo, and let them feed themselves to each other’s guns.