What's so sad about your comment is how much reality seems over your head.  (What's funny is that I suspect you still can't see that you proved his point correct! lol)

But, thanks for providing evidence that only a few years ago, the US was indeed the world's leader (as if any of us in the reality-based world was wondering about that!). 

The US once was the global leader precisely because of its interdependent system of alliances and it very real good faith interest in everyone's well-being, not just its own (indeed, its own belief that its own well-being required global allies).

But when Americans fought and died for these American principles, they had to do that for your benefit as well. Package deal, I guess.