France, Jan. 5 -- Denmark's Prime Minister Mette Frederiksen responded bluntly on Sunday after Trump said he "absolutely" needed Greenland for US national security.

Calling Denmark a "historically close ally", she warned Washington against questioning the territorial integrity of a NATO partner and stressed that Greenland "is not for sale".

"I have to say this very clearly to the United States: it is absolutely absurd to say that the United States should take control of Greenland," Frederiksen said in a statement late Sunday.

She called on Washington to stop "threatening its historical ally".

Greenland's leaders went further, describing Trump's language as disrespectful and disconnected from reality.

Meanwhile, France on Monday expre...