In the past year, Choi Jin-young has done everything he can to bring attention to his father, a missionary who's serving a life sentence in North Korea. He’s met senior U.N., U.S. and other human rights officials, testified at public events, and accepted many media interviews.
But as he marks 10 years since his father’s arrest this week, Choi doesn't know where his father is, or even if he's still alive.
