He has been lying for this administration for years. 

It is amazing to me that Democrats still don't know how to play this game (sadly, for soldiers in Iraq, it is no game). Everything the Bush Administation touches turns to bullshit. We know that.

They turned once-respected bipartisan demi-God Colin Powell into a liar on Iraq. Hell, look what happened to Rep. Brian Baird (D-Dumbstruck), who voted against the war initially and was recently brainwashed by them after one trip over there.

This has been Karl Rove's stock & trade his entire career, buying off those he needs who are either impartial or start out on the other side (try googling Bob Bullock, Rick Perry, Zell Miller, Joe Lieberman, Mark McKinnon, Matthew Dowd, etc and so forth).

Glenn Greenwald provides the specific case against Gen. Petraeus in this video.