Mrs T goes geopolitical

I'm not sure where the good lady finds her information, but she's clearly concerned about the future of North Korea: She writes:
To Kim Jong-il, c/o North Korea
Dear Sir
I read in the paper that you are thinking of retiring from your job as Divine Leader and handing over the post to your son, Un. I have nothing against the boy, though he does look very gormless - a family tray, I assume - but I wonder if you are doing the right thing. I only say this because our village butcher, Dai the Big Chopper, appointed his son Dai the Little Chopper to run the business, and the very next day the poor lad burnt the shop to the ground while trying to set up a celebration firework display in the cooked meats section. It's the sort of thing Un could do if I'm any judge of character.
I wonder whether your eldest son, Nam, might not be a safer choice. I know he's a bit of a villain, but he's the only one in your family that doesn't look as if he's only just learned to walk upright.
Yours respectfully
Blodwen Trellis, Mrs, Widow, retd.