Jaffe's sober assessment of Petraeus

This is worth reading. "Petraeus's
experience over the past decade shows that generals are not immune to the
strain. They get used up, too," writes Greg Jaffe. I have heard Petraeus' tour in
Afghanistan referred to as his "fat Elvis" period, an unkind way of saying that
he was tired and not on his A-game there.

I suspect that in Iraq, Petraeus tried
to work with local factors as points of leverage, while in Afghanistan, his
campaign against corruption worked against local factors. But I don't know the
Afghan war well enough to assemble the evidence for that hunch. Can anyone
enlighten me on this?