General David Petraeus is expected to leave his role as commander of US and Nato forces in Afghanistan as part of changes to be introduced by the Pentagon.

. . . speculation on his next role has also included becoming Chairman of the Joint Chiefs of Staff, the post from which Mike Mullen is expected to retire in October. There have also been suggestions that he could become Defence Secretary.

Geoff Morrell, the Pentagon press secretary said: "I can assure you General Petraeus is not quitting as ISAF commander, but nor does he plan to stay in Afghanistan forever. Obviously he will rotate out at some point, but that point has not yet been determined and it will not occur anytime soon. Until then, he will continue to ably lead our coalition forces in Afghanistan."
"Quit" is not the best word to describe this.