The leader of North Korea has always seemed like a violent person to me who is always ready for war.
Will he pull the trigger this time? For your sake and mine, I hope he's still bullshitting.
I am not sure he will. from the news report, he is doing this as preparation for the future and maybe based on intelligence report that he has received. It is also strategy to publish and make this news very public so it can be intimidating to any country that hears it, and a bold statement to say that they are ready for any situation that will be thrown against them. This will make any country with plans of aggression towards them to rethink their actions.