Gen Petraeus to head CIA

The soldier-scholar-statesman is to be sworn in as the nation's spy chief on September 6, less than a week before the 10th anniversary of the terrorist attacks that killed nearly 3,000 people in New York, Washington and Pennsylvania.

It's a sharp and unexpected career turn for the man many thought would ultimately become the top officer in the land — chairman of the Joint Chiefs of Staff — after six command assignments, including four in war zones.  He is credited with     turning around the Iraq war and helping pivot the still uncertain campaign in Afghanistan.