The difference is Saudi Arabia had not been attacked prior to that point. And yeah, there are reasons it could happen. We don't even know what version it was, whether it was active, or whether it was pointing towards Iran or Yemen.Yup! I remember that saudi arabia fiasco. LOL.
The Excuses Given were even more pathetic.
One of the Excuses was that it was looking in other direction.
I am Like WTH.
Once happens, twice is bad, but Russia has been repeatedly attacked by drones many times in the middle of a full-scale war when they should be expecting and prepared for attack, and all system should be active and manned. That's fundamentally different.