Insisting that Greenland needs to be part of the US, President Donald Trump has said that it would be an "unfriendly act" on the part of Denmark if they did not let this happen.

Greenland should decide on its own independence. US President-elect Donald trump did not back down in a telephone conversation with Danish Prime Minister Mette Frederiksen on Wednesday from threatening to impose tariffs if she does not sell Greenland to the United States,

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.

President Trump wants Greenland, and he's reportedly making that very clear to its current ownership. The Hill reports that Trump had a "fiery" 45-minute phone call with Danish Prime Minister Mette Frederiksen on Jan.

Trump spoke to the Danish Prime Minister for 45 minutes last week, the report said, citing five senior European officials. Trump was aggressive and confrontational following Frederiksen's comments that the island was not for sale,

Denmark has criticized the "horrendous" attitude of Donald Trump during a phone call with Danish Prime Minister Mette Frederiksen. The two leaders spoke for 45 minutes last week regarding the potential sale of Greenland to the United States.