Is this it for North Korea? Oh god I hope so.
I wouldn't hold your breath.
I don't imagine any country wants a war/invasion at the moment with the worlds current economies.
The west isn't even getting fully involved with CIA despite them having had actual effects on western nations.
I mean they're recruiting westerners, publically executing prisoners, orchestrating international terrorist attacks and causing mass emigration of refugees (who are causing their own issues to various national economies), and no one is lining up to go to war.
North Korea flashing its willy and pissing up a wall isn't going to illicit a stronger reaction.