Movie about north korea

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Hi everyone, I'm new here, so I'm sorry for any mishaps in advance. Anyways.
I'm looking for a movie about an american scientist, if i remember correctly, who survived a bombing in the 1970's and he was taken in north korea, married a north korean and after raising a family and working with North koreans for years, the us tried to rescue him (im not entirely sure about the last part). Do you know the title or have any clues?



Thanks man, that's the one, you re the best