greenland should join nafta instead
Probably more important for them to join NATO. NATO was formed in part due to the instigation of Norway. After World War II Soviet subs used to flagrantly violate Norwegian territorial waters. The Norwegians, who had been occupied by the Nazis for five years, prevailed on the U.S. and Britain to form a Western alliance.
The Russians have been trying for decades to intimidate the Canadians over Artic mineral rights, despite their close ties to the U.S. A truly independent Greenland is in no way a viable country, they will need some sort for big brother for protection.