The sun sets over Nuuk, Greenland, July 31, 2017. A spokeswoman for Denmark's royal palace says U.S. President Donald Trump's decision to postpone a visit to Denmark next month was "a surprise." Trump announced his decision by tweet after the Danish prime minister dismissed the notion of selling Greenland to the U.S. as "an absurd discussion." Credit: David Goldman | AP

BERLIN — Danish lawmakers on Wednesday reacted in fury to President Donald Trump’s postponement of his two-day visit in early September to Denmark after its prime minister said she was not interested in selling him the autonomous island of Greenland.

Parliamentarians and former government ministers slammed the president’s behavior as juvenile, undiplomatic and insulting, though the government itself has yet to comment on the visit’s cancellation and instead scheduled a news conference for the afternoon.

“It’s an insult from a close friend and ally,” Michael Aastrup Jensen, a member of the Danish parliament with the influential center-right Venstre party, told The Washington Post. He said Trump’s interest in purchasing Greenland took the country by surprise and was initially widely considered to be a joke, before Danes realized the full extent of “this disaster.”

Jensen said Danish lawmakers felt misled and “appalled” by the president, who “lacks even basic diplomatic skills,” he said. “There was no word [ahead of time] about: ‘I want to buy Greenland and that’s why I’m coming.’”

On Twitter, Denmark’s former business minister, Rasmus Jarlov, wrote: “For no reason Trump assumes that (an autonomous) part of our country is for sale. Then insultingly cancels visit that everybody was preparing for.

“Please show more respect,” he added.

Trump announced the postponement of his visit via Twitter on Tuesday night, writing that Denmark is “a very special country with incredible people,” but adding that he had postponed his meeting with Prime Minister Mette Frederiksen after she said “that she would have no interest in discussing the purchase of Greenland.”

“The Prime Minister was able to save a great deal of expense and effort for both the United States and Denmark by being so direct,” Trump wrote. “I thank her for that and look forward to rescheduling sometime in the future!”

The announcement came two days after Trump told reporters that owning Greenland “would be nice” for the United States strategically. Though the status of the self-governing territory — that is part of the kingdom of Denmark — was initially not publicly cited as a scheduled topic during his visit to Denmark, the postponement of that trip over resistance to his acquisition plans now suggest that it was Trump’s central focus in the first place.

Danish officials, including the royal palace, had rushed to organize the presidential visit, which was announced on short notice.

A spokeswoman for the royal palace said on Wednesday that the visit’s postponement was “a surprise,” according to the Associated Press.

Center-right lawmaker Jensen was more explicit, calling the move “an insult to the royal house.”

Other lawmakers cited by Danish media outlets questioned if the president was still welcome in the country.

Trump’s behavior reminded him of “a spoiled child,” Soren Espersen, foreign affairs spokesman for the right-wing populist Danish People’s Party, told Danish newspaper Politiken.

“Trump lives on another planet. Self-sufficient and disrespectful,” Pernille Skipper, a left-wing Danish politician, wrote on Twitter.

Martin Lidegaard, the chairman of the Danish parliament’s foreign policy committee and former foreign minister, told The Washington Post that he hoped Danes would not take this “quite absurd” episode too seriously.

“Understandably, a lot of people are angry,” he said, “but we should not let Trump impact Danish-U.S. relations” in a negative way.

“We’ve been close U.S. allies for decades,” he said.

Danes have long considered themselves to have a particularly close relationship with the United States. Denmark actively supported the U.S.-led invasion of Iraq beginning in 2003, even as France and Germany refused to do so. Denmark has also closely collaborated with the United States in the Arctic, which has been a growing focus of the Obama and now of the Trump administration.

After the Cold War, the Arctic lost some of its strategic significance. But climate change and the associated melting of the region’s ice cover are making natural resources more exploitable — and turning the Arctic into a region with growing economic and military importance to Russia, China and the United States.

“President Trump’s postponement of his visit to Denmark is a setback for our countries’ diplomatic relations, but it may be for the best,” Anders Fogh Rasmussen, a former Danish prime minister and past head of NATO, wrote on Twitter on Wednesday morning. “The Arctic’s security & environmental challenges are too important to be considered alongside hopeless discussions like the sale of Greenland.”

Apart from eliciting anger, Trump has had at least one other impact in Denmark in recent days, though. His moves, said center-right lawmaker Jensen, had “strengthened support for Greenland.”

Washington Post writer Jennifer Hassan contributed to this report.