I would do absolutely nothing until they actually became a viable threat to us or Europe. At that point I would notify the citizens of Iran to either depose their leaders or get out of the country. If the latter occurred I would commence bombing Iran back to the stone-age. No troops on the ground, just a massive bombardment of all military and government targets. Why spend billions on fighters and bombers if we're just going to fly them in airshows?
what a wonderful solution, only one problem, without any infantry there will be like millions of jobs lost, I thought people need jobs ... But if you meant that you would still keep the soldiers for protection, than alright ..
But I think that what people like you don't really talk about is the fact that the threat, once again, comes from nowhere, and your government is probably the only one that can see it