The bottom line is that as a nation, we can no longer afford a military capable of policing the entire world. Our spending has been so spendthrift and gratuitous for so long that it must end for everything. And this means everything.
As far as the military goes, the reduction must be to the point where the military can only be used for things that are in our direct national interest. This means no more peacekeeping between willing belligerents; no more disaster relief; no more frivolous interventionism.
Military need, not military want.
If one foreign nation wants war with another foreign nation, and neither of them are our allies, then let the butchery commence, because it is not our problem. There is no “humanitarianism” unless somebody pays for it.
We only get a small portion of our oil from the Mideast. So if they want to slaughter each other, it is China’s dilemma because they get much of their oil from there.
We can no longer tremble at the idea of a “butterfly effect” turning a small war into a world war. We have to sit back and watch, and only intervene when it shows prospects of doing so.