Add Yahoo as a preferred source to see more of our stories on Google. South Korea's National Intelligence Service (NIS) briefed lawmakers this week that North Korean leader Kim Jong Un is actively grooming his daughter, Kim Ju Ae -- believed to be around 13 years old -- as his designated successor, advancing her from prior "successor training" to the stage of formal "successor designation" in a bid to extend the Kim family dynasty into a fourth generation.

Seoul, South Korea -- A young teenage girl shrouded in mystery and intrigue could very well be the next leader of the isolated hermit nation North Korea.