North Korea have Nuclear bomb Technology yes but as yet they do not posses the knowledge to make the war heads small enough to deliver their payload on small enough rockets with the same yield as their test bombs (which are massive) this is why the US wanted them to stop testing further
I agree but the usa have now changed their tone with north korea and want to talk instead of bully.
To me this sends the message if you can make a rudimentry nuclear device then you get treated with respect and other countrys will have seen this.