The appeasement of North Korea and other states like it by the relatively free countries living under constant attack by them has a long and disgraceful history. One Free Korea sums up the latest chapter. 22 people tried to escape and were sent back to their deaths in North Korea in the name of "peace" and "sunshine".
If you look at the ROK Drop post on the subject, you can see me in the comments hoping it wouldn't turn out this way and offering hypothetical other ways it might be.
This is probably the worst betrayal of defectors yet. The other similar stories I've heard, Simas Kirdirka, and Miroslav Medved, both end with the victims alive.