Denmark's Prime Minister Mette Frederiksen emphasized Greenland's right to self-determination in a phone call with Donald Trump, who previously expressed interest in acquiring the territory. Frederiksen reiterated that Greenland is not for sale and highlighted Denmark's commitment to security in the Arctic. The conversation follows Trump's controversial comments and a potential referendum on Greenland's independence. Danish leaders are concerned about Trump's threats of tariffs, which could impact the economy. Frederiksen is set to meet with business leaders to address the situation.