I believe the russians warned that the area was unstable a couple of months back, after Fat Boy's last nuke test. I'd like to think the CIA had something to do with this, but I doubt their competence and besides, they're preoccupied with playing dirty politics in the USA.
Chinese scientists have warned that the site eould collapse not if but when, and send a cloud of radiation into China
Winning
Not the CIA but the US Military. Remember Mattis telling the Military to get ready. Oct 10 is a special day in NK. Japan, SK and others predicted another nuke test on that day but no test happened. Do a search on Rod Of God Weapon. Beauty of weapon is no radiation leakage. Bombs would cause severe leakage. Also where is rocketman.