They've also stated at various times that they believe first use or any use to be against Islamic law.

I don't find any of these statements to be particularly credible, but I also don't think they're going to strap the first bomb they make to the closest missile they find and immediately send it at Tel Aviv when it surely means the total destruction of the Iranian state.

Iran has repeatedly stated they will not develop nuclear weapons.

do you remember what usa president stated just couple of days ago? to destroy whole country. didnt it sounded credible enough?