Donald Trump has repeatedly expressed an interest in annexing Greenland and again suggested Canada could become a US state.

From the Reconstruction era to the Cold War, multiple administrations have tried (and failed) to acquire the Arctic island. Here’s why Greenland has always remained out of reach—and why it always mattered so much.

President Trump had a “firm” phone conversation with Denmark’s prime minister last week to convey his serious intentions of acquiring Greenland, according to a report citing officials privy to the talk.

The story goes that Trump and Frederiksen spoke on the phone last week for about 45 minutes in what was expected to be a bit of a feeling-out between the two parties, given Trump’s very public declaration that he would like to take Greenland off Denmark’s hands.

It “would send a strong signal and could contribute to stability in the region,” Robert Brieger, head of the EU’s highest military body, tells Welt am Sonntag.

During last week's tense call with the Danish premier, Trump insisted he was serious about taking over Greenland, the Financial Times reported, raising fears about the future of trans-Atlantic relations.

Anders Vistisen, a Danish member of the European Parliament, has told U.S. President Donald Trump to "f*** off" after Trump again expressed interest in purchasing the island of Greenland. Newsweek has contacted the White House for comment via email.

The picturesque country of Greenland has become a popular destination for the many seniors who are traveling in record numbers to all corners of the world.

The top European Union military official, Robert Brieger, said it would make sense to station troops from EU countries in Greenland, according to an interview with Germany's Welt am Sonntag published on Saturday,

Denmark agreed on Friday to discuss the Arctic region with Washington, Foreign Minister Lars Lokke Rasmussen said, after his first phone call with the top diplomat of the administration of President Donald Trump,

Donald Trump insisted he was serious in his determination to take over Greenland in a fiery telephone call with Denmark’s prime minister, according to senior European officials.