First, there will be a series of precision strikes against Iran's military infrastructure(command and control) combined with attacks against SOME of the nuclear facilities.
Next, there will be a ground invasion designed in coordination with Iran resistance to remove the Islamic leadership from power.
This exercise will very much resemble the attack against the Taliban, where the primary goal is only to remove the offending organization. Iran will become a democracy and dismantle their Nukes on their own with help from the IAEA.