I think you should build your argument a little bit more.

I’d say, why not say that also for drug cartels? The only reasonable argument that comes to my mind is that some big cartel head might have local government influence, but that does not apply to Kim and New Zealand, right?

Another possible argument would be that the damage has been done elsewhere. But in the case of the dtug cartel, if there are victims in 20 countries that why would any third party have priority for enforcing their law?