Who should be stepped down now?

I would like to vote for North Korea's Kim jung un. Germany's economics financial times also nominated Kim jung un as the leader who should be stepped down in this year. As you know, Many leaders whose ruling was inhumane and autocratic were already thrown out. But, Only North Korea's dictator is still exist and influential in their society.

North Korea is still isolated and they hardly communicate with other countries except for China. If this situation is keep going on, North Koreans will lose their freedom forever. How much more time can they stand this? Why should they live in the old kingdom now?

Even though China still objects to changing North Korea system for their purpose, I think UN security council has to deal with this problem and prepare for something to solve for North Koreans' human rights.