Hyeonseo's talk is the best. Really impressive.
I am a south-Korean and live in U.S. now. When i go to school and meet some people, they always ask about NK. Nowadays, NK threaten the world including US so I have a lot of interest of NK situation. Her story is really impressive to me even though I heard a lot of escaping NK stories but I think the thing shining her is her confidence. She tried to save her family and study English for living in south Korea and she is in the TED now. How surprising! Nice woman.