If they ever use them againt the US then we will be forced to invade Iran and kill every single member of their leadership and military forces with absolutely no quarter given.

If you really think about it, the US wouldn't even need to use nuclear weapons to accomplish the task should it ever come to that. The US has more than enough conventional weapons to do the job. (of course using nukes would probably make the job easier to digest for the American people who are kind of squimish about asking our soldiers to commit such horrific actions...) Ultimately the Iranian people will be the biggest losers in the Iranian drive to become a nuclear playboy.

How can they be so dumb?