The reason we are here today, dealing  with the NK  crisis is because of past failed policies of our presidents. From Bill Clinton to GW Bush then finally to Barrack Hussien Obama. 
Kim Jong Un / NK has consistently made complete  fools of these presidents , (not to mention our esteemed politicians) by agreeing to this INSANE Nuke deal. The US offers Money to NK,he then takes those Millions of tax paying dollars and runs away! Thank you very much dummies.  
With NO intentions of complying to the Nuke Agreement . Kim took us for suckers
 I just get a kick, when we hear Career politicians, like Dianne Feinstein to our novice home grown congressional member Brian Schatz spouting nonsense. And yet, still  wants to continue with their senseless ,non productive dialog with NK ?  Insanity?
 Let me break it to you,you tried it ,it Failed. Kim Jong Un had no intentions of keeping his word and you fell for it. So don't blame Trump,he is just doing the wipe-up of  the mess you left behind.IMUA!