What stands out here is not just that Petraeus remains under investigation but that he remains under investigation while being reintegrated into the foreign policy establishment.

To wit: Petraeus is ostensibly being investigated for mishandling classified material and yet he retains his security clearance. What’s more, he has been casually advising the White House on Iraq, where he directed the effort to end a civil war in 2007 and 2008 and still maintains close relationships with many of its leaders.

“All of us who know him and are close to him are mystified by the fact there is still this investigation into him,” Jack Keane, a retired four-star U.S. Army General said in an interview.  Keane has been both an adviser to and mentor of Petraeus since he saved Petraeus’s life during a live-fire training exercise in 1991.