Perhaps the CIA has high-level assets within the Iranian government who for understandable reasons go unmentioned in the Washington Postarticle; but if we are indeed primarily reliant on signals intelligence and aerial surveillance, as the article implies, then we may be in for a nasty shock.
Indeed, we have experienced such surprises many times before–for instance, the U.S. intelligence community was caught off guard by the Pakistani nuclear test in 1998 and the North Korean test in 2006–and this at a time when U.S. intelligence capabilities were nearly as advanced as they are today. The reality is that our enemies are aware of many of our high-tech spying techniques (e.g. a stealth drone crashed in Iran) and know how to cloak their activities to prevent the full shape of their efforts from becoming clear.
I would be a lot more convinced by accounts such as the one in the Post if the anonymous intelligence officials quoted therein expressed some degree of humility about their ability to penetrate the deepest recesses of a closed political and military system such as Iran. The fact that they come across as being so utterly confident in their judgments makes them paradoxically less trustworthy: They are failing to question their assumptions just as they failed to question their assumptions about Iraq’s WMD program prior to the U.S. invasion.