With four(!) Carrier Strike Groups, one Expeditionary Strike Group and an absolute laundry list of additional guided missile cruisers and destroyers, nuke subs and support vessels headed into the Persian Gulf I suspect Iran is pretty much under control, with or without the Russians.
And just what do you think the U.S. is going to do with all those military assets. So far just talk with the Iranians smirking at us. I don't think we will take any action against Iran and they will pretty much continue doing what they please vis a vis nuclear weapons.