The intelligence community has never slept on infiltrating Iran ever since the Shah was swept out.  The efforts are getting more and more feverish as they want to eliminate Russia's allies one by one; with Assad having already fallen and the Saudi regime unable to handle the Houthis, Iran seems like a logical target.  Today's great game is two way and some of the US allies are threatened as well. As of today, neither the Gulf States nor Israel are in a particularly strong position.

But "they" haven't been as successful with the color revolution playbook in recent years.  The effort to remove Lukashenko came to nothing.  Assad's fall, they may have just gotten lucky with the Syrian regime weakened by over a decade of war and losing legitimacy.  But Iran is not remotely in the same situation.  Even if the ayatollahs are detested at home, I doubt the Iranians want to come under the thumb of a US puppet.  I don't expect to see successful regime change there, especially since the US seems now to focus more on their own hemisphere with Venezuela the main foreign target now.

But I could be wrong - unlike the MSM I make no claims of omniscience.