I feel sorry for your average North Korean, I mean they have to live under the dictatorship of this lunatic and pretty much have to do as they are told, or face the consequences. The world has seen the cruelty of some of the most notorious dictators, with the western world intervening and dealing with them only if it had implications, usually of a financial nature.
Kim Jong Un is a different ball game altogether. Any leader of a country who implements rules such as his people have to have their hair cut like his own is clearly a worry. It's frightening not just for the Western World, but for his own people as well, as once the Yanks get going their country will be pulverized.
I honestly think that the Yanks missed a trick and that years ago they should have sent their Special Forces in to remove him swiftly. He and his father before him have been on the radar for years, but with first Iraq, then Afghanistan and now the on going issues with Islamic Extremists they took their eye of the ball and left this rogue nation to quietly go abouts it's business in building it's nuclear capabilities.
There's one thing for sure it's going to be very interesting to see how this unfolds.