When it comes to Iran, the word is all "regime change".
Are we effing nuts? Iran is like 70 million people who have elections and throw the bums out. IOW, the only functional democracy between the Phillipines and Turkey. You want to exchange that for a dictator, like in Pakistan, or Saudi Arabia, or Egypt? Getting nervous about that democracy idea?
Our postwar policy of coups, assassinations, and military aid has filled the world with unstable dictatorships and weapons. Adding Iran to the list won't solve anything.