The center cannot hold
I do disagree with him on two points:
1. IMHO, Samantha Power's famous security memo isn't quite an ideal tonic for the Bush Doctrine, given that it carelessly overplays the Iranian threat. I'm wary of that when Robert Gates does it, and I'm just as wary when it comes from a Democrat. The possibility that Obama will stay the course with Gates is all the more reason for such slips (or whatever they are) to give us pause.
2. I don't think there were ever grounds to be excited about Obama as a progressive change agent. He has consistently worked the Forer Effect, talking in circles, saying something for everyone without regard (or much scrutiny) for the internal contradictions.
Beyond that, there are many canny observations about the dumb-as-dirt strategy called "bipartisanship" or "centrism" — the errant path that Obama and his unquestioning supporters are traveling ever more rapidly.