North Korea dictator Kim Jong Un is illegitimate because his mother was Japanese (bbc.com)

May explain in part why he has executed half his family

The suffering in that country is insanity yet since they don't have oil no country will ever "liberate" them

Heh, bet he comes unglued when his advisors tell him about this title ...

Except NK isn't a hereditary monarchy. One might say "so what, they still have a dictatorial rule by a single family", but it is an important difference: the leader post inheritance isn't governed by a clear set of rules so familial illegitimacy is just irrelevant for politics.