Try and Keep Up ... (chart from Hardball)
Chris Matthews (Hardball) does a pretty good job of setting up this story, and his guests explain is pretty well, too.
B/L: Nothing criminal it looks like at this point. A lot of embarrassment and food for the sex scandal crowd, but that's about it (thus far). Petraeus was right to step down -- he is the head of CIA and thus via that affair with Mrs. Broadwell, would have been subject to blackmail ... he did the right thing ... this story is still not fully told or understood.
Next the Pols will wade in (and some are already via FOX) to show Obama the blame, etc. etc. But, there are no zebras in that forest. A sex scandal - that's about it.