I like this Matthew Yglesias post, because it implies that the only reason he's even bothering to engage with a lightweight like Mark Krikorian is because he's branching out into topics beyond immigration (needless to say, his point remains inane).
Reading the post, I am struck by a wave of confusion as to whether conservative foreign policy means isolationism again. I mean, for a long time it did, but then we've spent most of the past seven years listening to the right tell us that no country is too small of a threat to be ignored as a potential invasion target. Maybe the pendulum is racing back to the old form of extremism? It's kind of like democratization -- neo-conservatism crashed headlong into decades of happily supporting thuggish dictators, and every once in awhile the right gets confused about which cliff they're demanding we jump off.