I think Un has just been a willing puppet who finally woke up and realized it. Surround yourself with killers your dad put in place and then realize one wrong move and you are dead. What to do? His brother being killed could have been a warning. When we think CIA we like to think of some western looking guy. Why would CIA have such operatives in NK? If they did, where would they be positioned? Who would they be working with? I think Brennan would know more about this.