One non-UN, non-US security person was injured, and there was no significant damage done to the building the rocket struck. I have a feeling that the initial report from the AP was a little over zealous in its doomsday nature and use of the words "massive" and "huge".
I do not blame the other news organizations for not picking up the story. They were too busy building a new shrine to that Chinese woman that heckled the China president.