South Korea's National Intelligence Service believes North Korean leader Kim Jong Un could have a secret son. The spy agency said in a statement on Thursday that even if a son exists, he is not in a position to become the successor to Kim, who took the reins of North Korea's government after the 2011 death of his father. The NIS reaffirmed its earlier assessment that Kim's daughter, reportedly named Kim Ju Ae and around 13, is likely in line to take over leadership of North Korea from her father. The NIS said it was still trying to verify whether Kim's daughter has an elder brother, but under current circumstances, he cannot be his father's heir even if he exists. The agency said Kim Jong Un also has a younger child whose gender has not been confirmed. The statement on Thursday didn't elaborate on the NIS assessment about Kim Ju Ae's solid political status. But it previously cited a comprehensive analysis of her public activities and state protocols provided to her. The statement was l...