Darrell Issa to the H-word Creature: How much of the concern - since at least April - of the US mission in Libya about shaky security did you know about?

There is quite a list of steadily more alarming incidents going back to spring that had our diplomatic and intelligence folks spooked.  Why was nothing done to address their concerns?  Maybe the H-word Creature will come forth with answers by Issa's requested date.  Or maybe she won't.