Nuclear Crisis in North Korean

I have saw some North Korean students who study in my University in an assembly，i think i would never been confused by the North Koreans to South Koreans，because the guys from South are proud of their clothes and their special tradition food，they talk loudly  with the pretty girls from south too，contrasted the north ones with black skirt,keep silence,no one want to approach them。by the way,i think female are not like to believe something which never exist,they are more realism，may this is the reason why seldom North Korean girls appeared in China，who the north Korean government can't control.the north country is made by fervent young man and old selfish dictator。
As a Chinese related to north Korean，I think the north Korean is a mirror of China.we are familiar with what is happening in North Korean，we had history like that。Nuclear crisis is the symbol of the unstable of the autocratic。war would destroy the criminal country and then give birth to a new country if they dare to challenge the world.