North Korea sitting on $7 trillion worth of minerals

http://www.9news.com.au/world/2017/07/01/14/45/north-korea-sitting-on-7-trillion-worth-of-minerals

Look wich country suddenly needs some "freedom". Gettit, "freedom"?
Bombs, I mean bombs.
Lets invade rescue this country for totally not money reasons C:

Seriously though. Who makes up these numbers.