The policy failure goes beyond the murder of her deputies in Benghazi.
GOP Congressman Peter King said Mr. Petraeus's testimony differed from what the former CIA director told Congress immediately after the attacks. Mr. King also said Mr. Petraeus said that the CIA's original talking points on the attacks were edited. The altered version became the basis for U.N. Ambassador Susan Rice's misleading and now infamous comments blaming the attacks on a YouTube video. Both that discrepancy and the issue of the altered talking points need further digging, especially if Ms. Rice is nominated to be the next Secretary of State.
But Mr. Petraeus wasn't responsible for lax consulate security or the U.S. policy that led to the Libya debacle. That's Mrs. Clinton's bailiwick. Last month in interviews from deepest Peru, the Secretary of State said "I take responsibility" for Benghazi.