Indeed. We are all getting used to the idea that North Korea does appear to have a functioning long range 'weapon of mass destruction'. After years of wondering about their nuclear ambitions to go with their missile program, they seem to have quietly mastered VX production. Arguably the hardest chemical weapon agent to manufacture but the easiest to weaponise once you have it.
Would we want to take on NK now, presuming that their capability is embryonic and accepting the likely outcome for Seoul? Or do we sit back and hope that they really would not wish to lay waste to whatever irritates their leader that particular week?
Perhaps the ability to get in and out of an IADS may be something rather relevant?