If I had my druthers, the U.S. would deliver the following message to Iran, and would back it up with corresponding kinetic engagement:
Dear People of Iran,
We have no dispute with you. We know you are not free, and that your government acts without your direction or consent.
Unfortunately, your government, which is cruel to you, exports that cruelty abroad. We can not tolerate your government and your military projecting violence outside of your borders, hurting the people of your region and of the world. Therefore, we will use our overwhelming power to systematically destroy your military, and when necessary your government, until those who rule you learn that we will not allow them to send their terror abroad.
We will do everything within our power to spare you, the Iranian people, from harm as we do this. We will do our best to avoid damaging your holy places and your civilian infrastructure. We have no quarrel with you. Our goal is to convince your government that its days of inflicting foreign terror are over and to make it pay a very heavy price until it learns that lesson.
America wishes the people of Iran well. We look forward to the day when you are a free people, when we can share our cultures and our commerce with each other.