As mentioned...do it right the first time...no margin for error without a strong backup....and secure ‘everything’ thereafter. This would not be a simple standard mission by any means.
Remember ‘we’re not telling what we’re doing...period. But you better believe ol’ Fat Boy and his Generals would not be taking the measures they are currently taking if they weren’t scared crapless something bigs coming their way....or/and a likely coup from their own people.
Personally, I’d like to see a coup and an announcement that the nation would turn away from nukes and long range missiles.
The big losers here are the North Koreans living 75 years in the past.