China had use for and plans for Kim Jong Nam
Ya don't off him without permission.
Now the Norks will all pay the price, ... starve.
South Korea will have to pick up the tab and will ask for US help. We'll have to wait and see what the new sheriff does.
Kim Jong Un knew that his replacement was being groomed - thus the assassination. Sad thing is, it might have bought him a few more years on the throne.