What does Kim Jong-un want? What is his end-game? Or, even a smaller question, what are the next provocations he is prepared to launch?
There is no simple answer to these very fundamental questions. We are caught in a dark room and have no sense of purpose.
The only certainty is that the man is a rogue leader. He completely is out of the accepted norms. He has no respect for some of the most basic principles that govern the relations among states.
In view of that, each major country has to ask itself a very straight question: what can we do to stop this extremely dangerous course of action, this criminal behaviour?
And the right answer is to isolate the man and his regime. They must be treated as pariah politicians. And that should be said loud and clear, including by the Chinese and the Russians. Ambiguity coming from Beijing and Moscow is not at all helpful.
There is no need for any additional show of force. The rogues know that such force is available and formidable. They also know that they would be reduced to pieces if they decided to take the initiative to carry an aggression against any other state.
But there is a need to gather as much means of prevention as possible. Including the most sophisticated military means.