Well, I wouldn't tag America to the description you just provided. But I completely respect your opinion and can understand (at most) that the view of the world from your eyes is different from the view from mine. (At least I'd love to see your list, maybe PM me.)
Aside from this specific talk, isn't the hardest thing about country politics is that the stories of the motivation or rationale for one decision or another, or one agreement that leads to another, can go on for decades? Look at Palestine and Israel. If you look at the last 60 days of action you may think "oh this one side is completely out of line!" But if you look at the last 60 years of action you could think "this other side started it all!"
(Israel and Palestine were just an example)
But once decades go by you have a new generation that has inherited a problem that for some reason is so serious it can't be forgotten by the new generation.
Maybe we all need just have a reset. Forget what happened before...let's start tomorrow trying to work with each other rather than against each other. What a different world that could be. Nice talking to you...
All right. It may be that when you talk about America and its supposed urge for world peace you mean more the population than the maniacs in charge. And if so I could probably agree with that. Yet; someone has to vote those people into power, assuming that the elections can be taken seriously.