It isn't just the ramblings, it's that Hitler had supreme power, was crazy, and on top of that started annexing territories via political means with no real interjection of the western powers until he finally invaded Poland. Had the Western powers intervened sooner the catastrophe could have been averted.If you believe the rest of the world should have heeded the warning that Hitler's book should have sounded, then I should only hope you have the same feelings over the ramblings of the current leader of Iran.
Note that I'm not using this to justify our current 'intervention' in Iraq. The first Gulf War did seem valid, however, because a) the US wasn't the only country involved in kicking Hussein's ass out of Kuwait b) it was clear who the bad guy was and c) Bush senior was just so much more talented and capable than his son...he knew better than to try and occupy an arab country. Those people are freaking crazy.
About the Persian issue, I really don't even know what I think should be done. I think it's silly that we won't even have direct diplomatic contact, much less negotiations. I think they're trying to build a nuclear weapon (why would a country sitting on oceans of oil need nuclear power to generate electricity? To protect the god damn environment?), but I also think that they're trying so hard to build a bomb to stand up to the U.S., and lets face it, it's the only piece of leverage they could have against invasion. It also makes Bush look silly(er)