[img]http://d.yimg.com/a/p/ap/20100623/capt.066f32264d434b90a858861547b75164-066f32264d434b90a858861547b75164-0.jpg?x=130&y=54&q=85&sig=WcV11cPRcMpGltyAG9E5Vw--[/img]AP - President Barack Obama sacked his loose-lipped Afghanistan commander Wednesday, a seismic shift for the military order in wartime, and chose the familiar, admired — and tightly disciplined — Gen. David Petraeus to replace him. Petraeus, architect of the Iraq war turnaround, was once again to take hands-on leadership of a troubled war effort.