The problem with the neo-cons is that they approach national security as "ideology security". What I mean by that is they base their security concerns not on what is best for America but what is best for their vision. Paleo-conservatives do tend to like their nation's borders and not go forth from them.
Fulani may have been a disaster for Buchanan, but the temporary allaince showed me that the movement tended toward the extreme, which is where dogma often leads. In the case of Fulani and Buchanan, it was the fringe right meeting the fringe left at the extreme of the political spectrum. An invitation to anarchy if ever there was one.
I'm not ready for that.
Yet.
Paleo-conservatives do tend to like their nation's borders and not go forth from them.
They need to look out over their ramparts once in a while...nature abhors a vaccum.
If we don't fill it on the international scene someone else will.
China perhaps?