In general, people don't want JUSTICE- They want to WIN.
The world court would generate more unhappy people than the US has.
Gee, I'm really sorry to hear that. I guess that means you think we should give up our system of justice here in the US. Obviously the people who are pissed off with it are killing all of the ones who are not. What I have described is a system that would apply to the world the same democratic standards of justice that we have here in this country. It works here, and it can work in the larger context.
And IF I wanted, I could certainly produce a WMD (chemical or nuclear). I have enough knowledge of chemistry and Physics to do so, easily. As do several tens of millions of other people. Not even including the 400 million or so that can follow "cookbook" directions.
This is precisely my point. Your missile defense system CANNOT protect us from people like you. But you have said that if even one WMD is delivered against us or our allies, the world will be destroyed. So therefore, your system CANNOT prevent the destruction of the world.
Would you like it if I said that the only way to make you happy was to kill all the Jews in the world?
Well, you have said that before, and you were implying it when you said this: OK. I am unhappy with you because you ( seeem to) support people who want to murder people like me.