WASHINGTON (AP) - US President Donald Trump is making light of his own idea of buying Greenland from Denmark, tweeting a doctored photo of Trump Tower looming over a small village in the Arctic territory.

Trump jokes on Twitter: "I promise not to do this to Greenland!"

Trump acknowledged on Sunday (Aug 18) that he is "strategically" interested in such a deal, but said it's not a priority of his administration.

He told reporters: "It's not No. 1 on the burner."

Danish Prime Minister Mette Frederiksen has said Greenland is not for sale and Trump's idea of buying it is "an absurd discussion".