Russia, and China have the capacity to bring about mad, the rest of the Global south has no defense against a atomically reckless US.

Yes they do. Russia and China are the defense. A first strike is the only defense for Russia and China against a belligerent usa that is willing to use nukes. It forces their hand no matter who the target is because of the usa’s proven track record of antagonism against China and Russia.

If someone screams over and over that they are going to kill you but they don’t because you have a gun pointed at them and then you see them pull out a gun and shoot someone else are you going to wait for them to face you or shoot them right away?

You are dooming for no reason. The results of a nuclear strike are horrible for everyone but they are markedly worse for israel and usa. You are worrying about people doing something that would hurt themselves more than it would hurt anyone else. Even a psychopath wouldn’t do that. They do not believe the armageddon tripe that some jar heads are spouting. There is no up side to them and all they care about is the upside.

It is a waste of energy worrying about something that is very unlikely to happen especially when there is nothing you can do to stop it.