Just how many medals have you awarded yourself, Mr. Armchair General?
If that drone came from an Iranian sub somewhere in the Med then that sub has committed an act of war.
Do you really think that the US and Israel have not done the same thing to Iran? What about the US drone that was brought down over Iran a few months back? This is a fully natural and expected progression based on the circumstances. Lets not jump the gun, cry foul call Iran evil over this. It'd be hypocritical.