/sarcasm
This guy probably realizes that, if, e.g., some ambitious, high-ranking general should happen to out-manoever him and succeed "dear old dad," he (Jong-nam) would soon find himself dangling at the end of a rope.
Regards,
Don’t the people of NK get to have a say in who their next Dear Leader is?
(Nope. He just admits that it’s only his father who will decide what the succession is.)
So the People’s Republic of NK is neither of the people nor a republic (which we all knew anyway; but it’s nice to have someone from NK officially admit it.)