This time it really has got people to sit up and take notice.
It was launched from a previously unknown site and probably from a mobile launcher. It reached an altitude of 3,724km (2,300 miles) and flew for just over 47 minutes with a range of 998km (625 miles) and demonstrated successful stage separation and the reliability of the vehicle's control and guidance systems, which would allow a warhead to make an atmospheric re-entry to its target. Analysis says the figures give it a range of 10,400 km (6,500 miles) putting cities in an arc from Chicago - Denver - Los Angeles under threat.
But not to worry. Experts say it will be five to ten years before Kim has a deliverable weapon. I hope they are different from the bunch who once told us it would be five to ten years before Kim had a nuclear weapon just months before a test was carried out.
There is a trend here, and one seen throughout history in ever so many different areas:
Idea - drawing board - models and modelling - prototype. Test - fail - improve - test again - fail again - improve further. This keeps going on until *success* can be claimed and then it becomes a case of small tweaks for exponential improvements. NK now looks to be at that point. What is the betting on a new nuclear test before the end of the year?