Benghazi : I know nothing...NOTHING

Yes, it took several days for the State Department to figure out that the Benghazi attack was by terrorists, so don't blame them.

The dog that didn't bark:
Yet why did the gamers know an attack was coming at noon US time but no help was sent?

the "dog" is not mentioned, because one doubts that Smith told this to his fellow gamers but not to those in charge.

Presumably his emails/request for protection will be found in the future, right next to Lois Learner's redacted emails.