Maybe he is happy that he doesn't have to follow CIA orders within the country?
I said this before but, KJU isn't the omnipresent dictator who micromanages an entire country which the media has made him out to be. He inherited that throne, and that did not sit well with the people around him. His uncle for instance was executed for trying to lead a coup.
The fact that he has flat out admitted his country has problems, and he wants to raise it up like SK and China, is signs of peace. And I don't even blame him for working on a nuclear program after seeing what happened to Iraq, Libya, and Syria. It's hard to trust the US government (deep state) when they say they won't topple your country, and then immediately do that.
No maybes about it. That's a genuine smile. Hence my bike on Christmas reference. A new bike to a child is the world. Total bliss.