North Korea acts like an incorrigible child, only with nuclear weapons. Whenever hopes begin to build that Pyongyang is ready to try a new approach, it engages in some new mischief or malice.
So it is with the apparent assassination of Kim Jong Nam, half brother of North Korean leader Kim Jong Un. The Democratic People's Republic of Korea, as North Korea is officially known, likely used the deadly nerve agent VX at a busy airport filled with bustling travelers.
So what to do about Pyongyang?
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