I don’t think their paranoia can be described as justifiable, there’s no chance at all at present that anyone will consider invadijng North Korea. I think Jong-un’s mental state is a fascinating question. He was been raised in a bubble. While his generals and others may be more in touch have they dared to tell his father? Tell him? Its crazy how little we know about NK.
No, at the moment I don’t think there’s a threat at all.
But later, when they have their ICBM technology sorted, and nukes to put on top of them, and they are still run by mentaly unstable indoctinated paranoids raised in a bubble of lies…
I reckon there’s a good chance China will go in before then tbh.