What does it take to get an American released from North Korea?
(WorldNews North Korea)

(CNN)It`s one of the most feared punishments in the world: A decade or more of hard labor at one of North Korea`s notorious work camps. And when Americans face that grueling sentence -- often for questionable reasons -- there`s no easy way to get them out. JUST WATCHED Student released by N. Korea in a coma Replay More Videos ... MUST WATCH Student released by N. Korea in a coma 01:37 But on Tuesday, the regime released detained American college student Otto Warmbier, who has been in a coma for over a year. It`s a significant move, since negotiating with a totalitarian regime is challenging, and it`s not always successful. Here`s a look at some of the unique methods used to free detained...