Is Kim Jong-un Concerned He Could Be the Next Leader to Be Toppled By Trump?
I don’t think Kim is concerned at all about being next. If anything he is pointing out to everyone that he was correct to advance their nuclear and missile programs. Additionally he still has a positive relationship with Trump which is important:

North Korea’s sharply worded condemnation of recent US strikes on Iran has fueled debate over whether its leader Kim Jong-un feels unsettled by the dramatic downfalls of Venezuelan President Nicolas Maduro and Iranian Supreme Leader Ayatollah Ali Khamenei.
And experts said the lesson for Kim may be less about fear than survival. Rather than pushing him toward talks with Washington, such events could reinforce his belief that only a credible nuclear deterrent guarantees regime security — a strategic difference that may embolden, rather than frighten, Pyongyang as it watches both the military action and its political aftermath, they pointed out. (………)
The removal of Maduro in January and the subsequent US-backed operation that eliminated Khamenei marked a rare sequence of regime-toppling actions against leaders openly hostile to Washington. Some experts say the developments inevitably resonate in Pyongyang and that the back-to-back removals of anti-US leaders complicate Kim’s calculus, particularly regarding whether to accept a potential summit.
You can read more at the link.


“he still has a positive relationship with Trump”
It is because Trump knows his secret.
All those “missile tests” into the sea?
He is the only thing standing between us and Godzilla.
Keep up the good work, Defender Kim.
I think the Herald article fundamentally misunderstands how Maduro and Khamanei were perceived as threats.
That is, they were, through drugs or terrorism, killing Americans. Kim has not done that (though his father and grandfather did).
Kim is really only an irritant to neocons. He wants attention periodically; but he’s no idiot. He provides South Korean, Japanese, and American politicians with a relatively innocuous target; but he is not dangerous as long as everyone plays the game.
Meanwhile, Winnie the Xi has been making noises about Venezuela, Iran and Taiwan, so Kim is rightly not making any serious threats.
Those Temu anti-stealth radars didn’t help the other CCP clients very much…