Both Trump and Kim Jong Un are crazy. There's only one difference:

[Tommy_Carcetti]

One of them is under investigation with the threat of impeachment and removal on the horizon. The other has decades of a cult-like devotion to his family name in his favor.

[BigmanPigman]

1. You forgot a few other similarities...

both are fat, immature and suffer from penis envy.

[Warpy]

2. Defectors say loyalty at the top is not like it is at the bottom

and that Kim could be toppled and most likely will be but without any warning at all visible to the outside world.

[Voltaire2]

3. I actually don't think Kim Jong Un is crazy.

He and the korean communist party are doing rational things to keep internal control of north korea and protect it from foreign threats. They heard Bush-II loud and clear when he listed them as part of the "axis of evil" and then proceeded to dismantle Iraq. They watched as Libya renounced its nuclear programs and was then dismantled by the US and its allies. They've watched as Syria has been completely destroyed through yet another US sponsored campaign. Only Iran has managed to survive the post 9-11 "clean sweep".

Their nuclear program is a rational deterrent against an aggressive US that has marked the regime for destruction.