There is something I don't get in this move. What's the purpose of Kim Yung-un? Is he mad enough to believe he can underdog the rest of the world with his dilap

There is something I don't get in this move. What's the purpose of Kim Yung-un? Is he mad enough to believe he can underdog the rest of the world with his dilapidated army? Does he believe that China will support him vs South Korea allies even if he launches an attack? Is it just a means to make the media of the rest of the world focus on him? Why? Does he want to be in position to negotiate an opening and say to his people: look and they are afraid of us and ready to talk? I rather believe in the latter option. Otherwise the only solution is to send him a sniper with a syringe of antipsychotics to pacify him.