A MOAB can only be delivered by bomber aircraft and flying one deep inside NK territory is out of the question. It will have to be by missile.
They can’t even be delivered by bomber. It’s so big, you need a cargo plane. I believe they’ve been dropped from C-130’s so far. Could a C-17 do the job?
Learn more here:
http://www.foxnews.com/story/2003/03/26/b-2-bombers-lead-shock-and-awe.html
https://en.m.wikipedia.org/wiki/Northrop_Grumman_B-2_Spirit