The video CYA stuff all came from the beltway. Either Foggy Bottom or the NSC in the White House. The CIA and State people on the ground in Libya reported an attack.
They absolutely did from minute one. Hillary’s chief of staff confirmed as much the next day in emails. My guess is Victoria Nuland is the author of this particular lie, but they were all complicit in promulgating the false narrative—Obama, Clinton, Rice, Carney.