Kim Jong Un's younger sister and right-hand woman, Kim Yo Jong, is a mysterious figure whose life has piqued international curiosity.
The 30-something woman was seen in her brother's bizarre photoshoot riding a white horse on a historically meaningful mountain.
She has rapidly become North Korea's most powerful woman, frequently seen side by side with her brother, and plays a key role in his administration.
Some had speculated in April that she fell out of her brother's favor, but her appearance...
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