Josh Marshall sums it up what that means for McCain:
Scheunemann's 'policy' was to get the Georgians ginned up on the idea that we were their close military allies and that we'd come to their rescue if their brinksmanship with the Russians went bad. Well, that didn't work out very well. Any situation where you start the shooting and then find yourself begging for a ceasefire within 48 hours is a major blunder. He's not an 'expert' on Georgia; he's the lead guy on the policy that got us into this situation. And the fact that John McCain would make him his chief policy advisor after he's been the conductor on so many trainwrecks should tell us all we need to know about Sen. McCain's foreign policy judgment.