related_tweet: north korea does nothing to reduce its nuclear arsenal but writes a nice letter to trump.  trump steps into nk and invites kim to the white house.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  iran signs a treaty to limit its nuclear arsenal. trump withdraws us from agreement and threatens to bomb iran.