With McCain getting a bounce from his quick if ill-conceived response to the Russia-Georgie conflict, it is clearer than ever that Obama must pick someone with unquestionable foreign policy credibility.  The reality that the military adventurism of Bush-Cheney-McCain has left us weaker than before 9/11 will not dissuade many independent voters from a knee-jerk conviction that we "need to be tough" on all potential adversaries, especially Russia.  The older voters whose economic circumstances will attract them to the Democrats - the disillusioned Reagan Dems - remember the Soviet Union well and will still feel more comfortable with breast-beating than with negotiation.  To counter that, Obama needs someone who can point out the flaws of McCain's positions with unassailable credibility.  That should defintely disqualify Kaine.  Biden has the credibility but his primary performance raises serious questions about his vote-getting ability.  Bayh may have the intellect, but ... I am falling asleep just thinking about him.  Wes Clark and HRC still seem like better choices that the three whose faces are all over the papers this morning.