We don't need any published data to acknowledge that the North Korean Armed Forces is very powerful. They have a strength of more than 4 million personal, and are armed with advanced weaponry. Trump will be really stupid, if he want a direct war with the DPRK.
The same was once said of Saddam Hussein. Where is he now? And could still live if not put itself above God. The same fate awaits Kim Jong-UN.
As far as I understand history, the dictators of the modern world end their lives very badly. I have a few more in mind, but so far I will not voice the names.