They called it "Zero" Footprint, obviously after you-know-who. But, you know Hilly had her big difference-making skankopotamus paw in it. As did the CIA. As did the MS-8 (Gang of Eight, that is: Boehner, Pelosi, Rogers, Ruppersberger, McConnell, Reid, Feinstein, and Chambliss).
What'd they do?
In short, it looks like they arranged to arm terrorists in Libya via straw buyer, the UAE, with delivery managed by Qatar. You know, so they wouldn't leave any footprints in the sandbox.
It is significant to point out that our involvement in the Libyan conflict excluded AFRICOM, under General Carter Ham. The mission was handed over to NATO. Nothing moved in and out of Libya without the approval of NATO. Admiral Stavridis, NATO commander, had to authorize any of the armed shipments that came in there.
Chris Stevens was embedded in Benghazi to help coordinate those arms shipments. At the instructions of State and the CIA, Stavridis (via NATO) used the United Arab Emirates (UAE) as the financier of the weapons.
Why would they (Obama, Clinton, G8, CIA, al Qaeda, and Muslim camelpissdrinkerhood) orchestrate such a thing? Qaddafi dead, Saudis placated, and you terrorized. That's most of it.