At this point, the US is an indespensible nation. We would love for other nations to step up and pick up their fair share of the burden, but that isn't really happening (except for some exceptions).
That's the status quo. We'd love for it to change, but you have to play the hand you've been dealt.
I must agree.
What you are doing here is engaging in hardcore reality. Power abhors a vacuum. So the real question is, if not us, then who? One way or the other it will be someone.
You know this, of course. But realists and idealists have a hard time agreeing on anything.