On the basis of the information provided by the media to us for the last two decades, then we are crazy to allow such a threat to continue because of the growing nuclear arsenal and the unpredictability of the political system that seem to be a MAD MAD MAD world situation.  IF whar they have been telling us about North Korea is true then China is crazy dumb to keep on appeasing this nation.   If what they telling us is true then we are crazy to allow some mad man with full control of brained washed nation that would soon possess many many nuclear weapons and the means to deliver them.   The new engine test is a progression toward inter continental balistic missile system.  DO you want to live under that threat of anhiliation, to have the entire world basically hostage to the whim of a madman that uses aircraft guns to execute his own generals.   Its a nutty situation that have gotten  out of hand because of China appeasement and the world appeasement.  Time for the world to decide..now