Follow below for the latest headlines, analyses, backgrounders and reactions to the escalating row over the future of Greenland on Monday, January 19, 2026: EU foreign policy chief Kaja Kallas stressed once again that "Denmark and Greenland are not alone" and vowed a strong response to Trump's tariff threats. In a post on X, Kallas said that "Arctic security is a shared transatlantic interest" that can be discussed with US allies. "But tariff threats are not the way to go about this.