Does North Korea’s Kim Ju-ae have a younger sibling? Seoul thinks so

North Korean leader Kim Jong-un’s daughter and apparent successor is believed to have a younger sibling, South Korea’s spy agency has said, offering a more detailed view of the ruling family’s line of succession.

Seoul’s spy agency previously said Kim was thought to have three children, but some uncertainty remained on the number of offspring as well as the order of their birth. The Kim dynasty is now in its third…