These froth at the mouth types are not libertarians. They are paleocons. Brigaders. Pitch Forkers. I'm actually somewhat surprised that they have the time to stop writing letters to their mortgage companies demanding that they stop collecting money for real estate taxes as part of their monthly escrow payment, or recording phony liens against the Township supervisor under authority of "constitutional courts" that meet in their neighbors basement, to even consider foreign policy.
Bottom line: these types are the bottom of the barrel life losers who resent modern American life. They've dropped out of mainstream politics and are simply sniping from the sidelines, with nothing constructive or useful to add to any discussion, waiting breathlessly for "CWII" to break out so they can release the years of pent-up political, sexual and economic frustration that have been building since the homecoming queen turned them down for a date and they flunked out of the local Moo-U at which they matriculated.
I drop in on their little froth fests every now and then just to see what's perculating in their fever swamps. They never fail to amuse and entertain, in a grim, pathetic sort of way.