Considering the life sentence given to South Korean missionary Kim Jeong-wook, what motivates an increasing number of people to risk delivering a message of spirituality to North Korea?

In recent times, the cases of Robert Park, Kenneth Bae and John Short have made headlines, bringing to the fore the complicated relation between religion (mainly Christianity) and North Korea. The beliefs behind their actions may appear irrational to some, yet they show that much of the Christian community cares deeply about the spiritual life of North Koreans.