US Benghazi 'failures': report

These were the scenes when militants attacked the U.S. mission in Benghazi and a nearby CIA annex last September.

The U.S. ambassador to Libya and three other Americans died.

On the final day of 2012 Senator Joseph Lieberman who chairs a Senate Committee investigating the attacks delivered its damning findings.

SOUNDBITE: SENATOR JOSEPH LIEBERMAN SAYING (English):

"We've got a dangerous situation and inadequate security and yet the State Department failed to take adequate steps to fill those security gaps, failed to adequately support security requests from its own personnel in Benghazi, and failed to make the one remaining decision that cries out to me as I look at the evidence here, which was simply to say 'we have to close this facility because we can't protect American personnel in Benghazi."

But Lieberman said there was no indication that Secretary of State Hillary Clinton had denied pleas for extra funding or security for the mission.

Instead he said key decisions were made by mid-level managers who had since been held accountable.