[Scarlett.]

Usually North Korea do a significant amount of grandstanding before their 'attacks' instead of doing them out of the blue.

Jong-Un is getting desperate, there's been more and more rumours of citizens forming small pockets of uprising (vandalising "election" posters ect.), there's also the fact that he keeps killing off his advisors, people who his father trusted over decades, and replacing them with yes men. I wouldn't be surprised if someone eventually offed him, he's like the Joffrey of North Korea. He definately doesn't have the respect or confidence his father and grandfather had.