NATO's Role in Greenland
Trump says US will take Greenland 'one way or the other' on Jan 11.
USGS finds oil, gas, and rare earths in Greenland.
2021 ban on new offshore exploration in Greenland.
Danish and Greenlandic ministers request meeting with US officials on Jan 14.
European leaders stress NATO's role in Greenland's defense.
Aaja Chemnitz says most Greenlanders reject US citizenship.
Greenland coalition rejects takeover plans.
Observers warn of NATO risks.