Iran has a plan, make the A-bomb, make rockets strong enough to reach USA and make the A-bomb small enough to fit on the rockets. Step 2, launch rockets at USA, Israel and any other country that does not recognize the Caliphate.
As for reaching our country, all they have to do is put a missel on a ship and bring to our coast line. Almost no defense in this case. They know this and it’s a good reason to stop them.