He is the first one that has kept the Norks guessing. Bush and Clinton and Obama were entirely too easy to figure out. Bush was naive as hell. Clinton was for sale. Obama and the Norkeans shared an enemy.
No one in their hierarchy has ever seen a POTUS like this.
The last one was probably Nixon, and all those people in NK are probably dead or senile...................
After years of pushing our presidents around like sheep, Kim finally shoved the angry sheepdog.