US President Donald Trump says he wants to buy Greenland from Denmark and is not taking ‘no’ for an answer.

"Greenland never has been for sale and never will be for sale," Aaja Chemnitz, one of two MPs in the Danish parliament representing Greenland, told CNBC.

"Perhaps it would be in the best interest of Greenland to be part of the United States," White House Press Secretary Karoline Leavitt said