Ok, you’re a tough customer.
Nk has nuclear devices. It has rocket tech sufficient to polar orbit a satellite
It shares tech with Iran.
An EMP can be caused by even a small nuclear device. It need not even be accurate.
Do not assume NK is completely incompetent.
They aren’t.
I call your attention to recent news.
Failed North Korean missile exploded 'within seconds,' US says
Some experts believe it was US missiles that immediately brought this NK missile down.