"Analysis: In Male-Dominated North Korea, Leadership Prospects of Kim Jong Un's Daughter Are Uncertain" by Josh Smith for Reuters

" 'Kim Jong Un belongs to a different generation than his grandfather and his father, and in some ways, he appears more receptive to change than his forefathers,' said Rachel Minyoung Lee of the 38 North research organisation.

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If Kim has any sons, they could still have an advantage to continue the male-centric 'Mt. Paektu bloodline,' Lee said, referring to a volcano on the Chinese border that plays a central role in the ruling party's mythology."