I doubt that even if Iran had a bomb they would use it. besides all the immediate ramifications of using the bomb (ie killing thousand and pissing off the world) they would have to deal with the US and our few allies. if they did i would suspect that alot more countries would join us, such as japan, germany, and france (maybe damn lazy people). it seems more feasable that they would just sell it to another country for a huge price and continue to make more bombs as an export. they really dont want to blow up isreal with a nuke because that would be the end of there country.