They've got all the capability they need to source everything internally for weapons manufacture, therefore there's no impediment to
get the prize sitting in their soil
-so the only possible rational reason to manipulate the rest of the world is to restrict their MARKET, not their access to any of these resources you mention.
Could it actually be possible that Kim is just another evil monster in a world full of world-leading evil monsters, and, like the spoiled child with access to nuclear weapons he is, insists he's worthy of entry to the club?
The difference between him and Drumpf or Pootie, though, is $17T of unrealized resources is a small drop in the large bucket of world economic activity THESE 2 monsters influence.
Totally possible where you say he is a monster lead by and in a pool with other monsters...