An American drone can't see any more in Iran than the Iranians can't see in the US or UK simply by logging on to the internet or buying pictures from a commercial satelite company.
We all know that "spying" goes on every day in every country - whether it's journalists after a scoop, people taking a quick look at colleagues private e-mails, companies trying to get an advantage, neighbours being nosey, spouses looking for excuses to divorce their other halfs, or governments trying to find out if a nutter is trying to develop weapons which he's almost certain to use to kill millions.
What I don't understand is why is it even considered worth a mention?
If you've got something to hide, then keep it hidden properly.