Hi. You asked what my take is on the Iran situation. Well, here it is:
(1) Domestic unrest. These spasmodic occurrences do not amount to anything other than destruction of property and loss of lives. The regime has the monopoly of force. The protesters are unarmed. The regime's elements know that any revolutionary change in the regime will end their subsidies and their lives possibly. So, they will defend to the end. 
(2) Regime change, particularly the type that would bring the Shah's son to power, requires foreign intervention (possibly boots on the ground by an occupying force to prop him on the throne). There is of course the Maduro model, remove the Ayatollah(s) and then work with existing bureaucracy (possibly overtaken by a military dictatorship like Reza Khan).
(3) Movements of the US fleet. The Abraham Lincoln carrier group is headed to the Iran theater (Persian Gulf, Gulf of Oman and Arabian Sea). I am not convinced that the aim of this deployment is to strike Iran. I believe this armada is headed to Diego Garcia to secure that island for the United States. The Brits are about to hand it over to Mauritius (which has deep economic relations with China). This I believe is a good move on the part of the U.S. to get that island.