It is our politicians and religious leaders who stand in the way of world peace. The average Iranian isn't interested in nuclear weapons any more than those of the U.S. or any other country. If all the money that has so far been spent on nuclear weaponry were instead spent on eliminating poverty and disease, we would all be wealthy and healthy, and at peace, regardless of where we live or what color our skin.
What sets humans apart from the rest of the animal world is not intelligence, but their propensity toward insanity. How can we expect to have a peaceful world when a significant percentage of our politicians and religious leaders are irrational?
The problem is that irrational people do not recognize their irrationality. Ergo: We all need to see a psychiatrist regularly.