SEOUL (Reuters) -North Korean leader Kim Jong Un brought his teenage daughter to Beijing this week in her first public outing overseas, fuelling further speculation that she may be his potential successor in the family's dynastic rule over the nuclear-armed state. Secretive North Korea has never revealed her name or age, but South Korean intelligence officials believe she is the daughter identified as Ju Ae by former American basketball player Dennis Rodman. Rodman spent time with Kim's family in 2013 and described holding her as a baby.