http://www.americanthinker.com/blog/2014/01/to_protect_his_image_obama_has_tied_pentagons_hands_in_hunting_for_benghazi_attackers.html
Barack Obama and his minions have done everything they can to mislead Americans regarding Al Qaeda and its role in the attack in Benghazi that killed four Americans serving their nation. The attack was called by the administration a spontaneous demonstration caused by an all but unwatched video created by a hapless Coptic Christian in California — who was promptly jailed. This narrative was spread by Susan Rice, Hillary Clinton, and Barack Obama.
Then, as the truth leaked out despite efforts by the White House to stonewall and prevent witnesses from testifying, it became all but obvious that the attack was planned and perpetrated by Al Qaeda.
However, that revelation would have caused campaign and image problems for Barack Obama since he had repeatedly and grandiosely declared many times that Al Qaeda was on the run, was decimated, on the ropes and that, needless to say, Bin Laden was dead.