This will be very brief. I'm surprised that there doesn't seem to be any mention of this here at dKOS, as I first heard of it on NPR earlier today and now it's been the topic of other blogs...especially on RCP's blog by Tom Bevan. There is also a dustup on FOX as the McCain campaign has run with it.
At a fundraiser in Seattle on the 19th, Joe Biden made a comment that Barack Obama would be deliberately tested with an international crisis of some kind, like JFK was, in the first six months of his presidency. O's spokesperson Stephanie Cutter was questioned about it by Jane Skinner on FOX News this afternoon, and Stephanie tried to apply some Kentucky windage without much success.