Due to Snowden's revelations about government spying on its own citizens, government officials are having to compound their denials by lies, with more lies to cover the latter lies. The most recent likely fabrication is the closing of many embassies due to threats from Al Qaeda. Because they are sinking ever deeper into the quicksand of lying, to be credible Empire directors may be forced to concoct another terrorist event in order to salvage some credibility.
So it would be even better if now, as a warning has been given, something would happen to some U.S. embassy in the Middle East. That then would justify the warning and of course also justify the intelligence services NSA's limitless spying on people everywhere that made the warning possible.
Hmm - how much does it cost, let's say in Yemen, to have some guys on a motorcycle fire a few shots at an embassy guard?