Mette Frederiksen said Britain was ‘one of our closest and most important allies’ after her dinner with Sir Keir Starmer.

Greenland is a self-ruling territory in the Danish kingdom, which means policymakers in Nuuk control most domestic issues. Denmark, which oversees defense and security policy on the mineral-rich Arctic island, is injecting 14.6 billion kroner ($2 billion) to ramp up defenses.

President Trump reportedly held a “fiery” call with Denmark’s Prime Minister Mette Frederiksen over the president’s insistence that U.S. control of Greenland is necessary for American national security.

UK Prime Minister Keir Starmer has publicly backed Denmark's sovereignty over Greenland, according to his spokesperson Dave Pares. This is the first time Starmer's government has publicly supported Denmark in the ongoing diplomatic crisis with the US over the Arctic territory.