Iran is too big for land invasion (from where will they invade by the way?).
Regional energy fields and bases will go into fire by iranian missiles, including their navy ships. What do they want to do?
If we are confident we should just monitor them 24/7 and push the buttons on correct time and make the war as expensive as possible in human life, regional mayhem, increasing gas prices etc.
Don't forget national mobilization. We should stay focused, calm and neglet anything which is just psychological warfare mostly.