The Ambassador informed them of how unsafe it was, they ignored it, then they watched as the Islamists killed those people and did nothing. Actually they did do somehting, they ordered those who could save them to stand down.
To top it off, they made up a story about the video, just made it up.
Then the press covered for them: The worst, most offensive person in all of this is Candy Crowley. She should be driven from her journalistic place of malpractice.