Actually any plan needs to include the an increasing set of measures:
- Warn Iran that its proxy wars, nuclear program, and kidnapping of people world-wide is not acceptable. Demand the release of prisoners. Inform them the next step is military action. Hold out an alternative of eliminating sanctions, etc. if they fully cooperate.
- Increase sanctions on Iran. Arrest their agents in foreign nations. Send force to the Persian Gulf. Take military action against Iranian proxy forces in the region. Hold out an alternative of eliminating sanctions, etc. if they start to fully cooperate.
- Warn again. Then take military action directly against Iran. Start with taking out Iran's entire navy, port facilities, air force, and air force bases, and missile sites. Inform Iran if they launch missiles then the strikes will escalate. Publicly inform Iran if they use any type of nuclear device the we will start using nuclear devices.
- Escalate military action - take out all nuclear facilities. Take out government buildings.
- Warn again. Then take out all civilian airports, oil infrastructure, ports, communications, and electrical generation facilities.
Don't invade Iran with ground troops. The intent is to leave the country a stone age wreck that is incapable of taking aggressive action in the region -- not to repeat the mistakes of the past in occupying and re-building the nation. We are under no obligation to re-build an aggressive nation after eliminating their capabilities to threaten the region.