Any American who is genuinely afraid of Iranian nukes is probably a coward and/or a racist xenophobe and/or a military idiot.
1) what weapons other countries develop (assuming you are not at war with them) is NONE of your business. Sure, your military wants to know about them to try and keep pace with the latest weapons of potential adversaries...but that does not make it your business - just your concern.
2) Iran would NEVER, EVER attack America with nukes.
Say Iran launches nukes on America...they will be obliterated within the hour. They know this and even if an Iranian leader goes nuts and orders America nuked - his military people will not and will stop the attack (and immediately arrest and/or kill the crazy leader).
Besides, people for DECADES said over and over that the Soviet leaders were NUTS...that they could launch nukes against America. Some blather about they would rather the world ended rather than seeing communism failing. Well, communist USSR died and low and behold - they did not launch nukes as a last, scorched earth cry of revenge. WELL DUH.
3) How about the even dumber theory people spew forth...that Iran could give nukes to terrorists who would nuke America.
a) if New York is nuked by a terrorist group - obviously, America will then nuke the nuclear-armed country that has the closest ties to that terrorist group. Hezbollah nukes New York? Bye bye Iran - Iran knows this (btw - I do not think of Hezbollah as terrorists. And very few countries think their organization is either).
Hezbollah - Wikipedia
b) terrorists are usually nuts/mentally unstable and INCREDIBLY unpredictable. Why the heck would a country give nukes to a bunch of whacko's? They would have no idea if the whacko's turn around and sell the nukes to people you don't like. Or they could - in their whacko mind - suddenly not like you and use the nuke on you.
This is why countries will NOT give nukes to terrorists...it simply does them no good whatsoever.
4) And save the baloney about Iran using them to 'wipe Israel off of the map'. That quote was taken out of context. It was a quote from a previous individual used in another individual's speech. Yet another example of the MSM getting something wrong for some personal goal. Second, Iran would also not dare attack Israel with nukes as Israel has a fleet of nuclear-tipped IRBM's that could completely wipe Iran off of the map if Iran tried to attack. Iran knows this and so will not do it.
Israel and weapons of mass destruction - Wikipedia
5) But Iran has to worry about Israel attacking them with nukes. And if your 'mortal enemy' had nukes and your country did not - you would want to develop some pretty fast.
The thing is Israel handled it's nuclear program VERY smartly (they did not sign the treaty and refuses to confirm or deny that they have nukes). Whereas Iran signed the treaty.
6) Finally - what Iran and Israel do is NONE OF AMERICA'S BUSINESS. I don;t care if you Trumpbots/neocons think Israel is our 'ally'. Since the end of the Cold War, Israel has done NOTHING for America at all. Plus they indirectly cost American lives, take many billions of US taxpayer dollars every year and get much of the world mega-pissed off at America for supporting Israel and the horrific way it has been treating the Palestinian's.
Once again, any American who is genuinely afraid of Iranian nukes is probably a coward and/or a racist xenophobe and/or a military idiot.
I do NOT want Iran to develop nukes - the less countries that have them, the better. But I do not think Iran's (or North Korea's, for that matter) nuclear program is any of our business. And I totally disagree with sanctions against Iran or NK for this reason. Sanctions almost never achieve political success and they almost always hurt innocent, poor people the most (e.g. Cuban sanctions for decades).
Ta ta.