NK has leverage a random group wouldn't (alliance with China, and more importantly, a huge, dug-in conventional force which can obliterate Seoul in hours no mat

NK has leverage a random group wouldn't (alliance with China, and more importantly, a huge, dug-in conventional force which can obliterate Seoul in hours no matter what the US does, even a pre-emptive nuclear strike). Iran does, too. A hypothetical rando country probably doesn't. A company or terrorist group unallied with a major state certainly doesn't.