The only comment I have to make about Iran and North Korea specifically is that the governments (Not going to say the people) are definitely not solely aiming for nuclear energy. They want the bomb. Whether or not we should let them have it is a different question, but people who try to have this argument of establishing nuclear power by foreign sources in these countries are not realizing that they would never agree to such things.
Eventually though, nuclear weapons will fall into the hands of many, those who will probably use them. That will certainly be a dark day. Maybe we need to reinitialize Ronald Reagan's idea of Star Wars
.