Wondering "Why Greenland?" This May Help

The first 6:30 minutes covers geographic and geology history, while from 6:30 onwards, it discusses Greenland's true riches.

You should be able to connect the dots quickly at that point...

One of the pluses NOT discussed is strategic - Greenland (along with Alaska) provides the perfect location to disarm any incoming missiles shot over the Arctic quickly.

Military ALWAYS plays a reason in conjunction if not above the pluses discussed in this video.