The US president tweeted he will postpone an August meeting with Danish Prime Minister Mette Frederiksen as she had no interest in "discussing the purchase of Greenland" with him.
The world’s largest island has long been on the mind of successive American leaders who have been interested in its strategic and economic value.
"Greenland is not for sale. Greenland is not Danish. Greenland belongs to Greenland. I strongly hope that this is not meant seriously," Danish Prime Minister Mette Frederiksen told the newspaper Sermitsiaq during a visit to Greenland.
A European Union Agency for Law Enforcement Cooperation high official said that Baltic banks are threatened by money laundering coming from Russia.
As Europe lurches to the right, policies that were once rejected by the left are being incorporated into manifestos to garner votes.
Prime Minister Lars Loekke Rasmussen says he will resign on Thursday from the post he has held since 2015.
Polling stations open at 8 am (0600 GMT) and close at 8 pm, followed immediately by two exit polls. The focus will be on challenges in the Nordic country's welfare model and on two new far-right anti-immigrant parties.
The ruling centre-right Liberal Party and the opposition Social Democrats both say a tough stance in immigration is needed ahead of Denmark's general election.
With most votes counted across the continent of a half billion people, Mateo Salvini's hardline League party emerged as the largest in Italy, while Marine Le Pen inflicted a painful defeat on pro-European French President Emmanuel Macron.
President Maithripala Sirisena orders emergency for another 30 days, citing "public security," a month after deadly Easter bombings killed 258 people.
Scores of various countries within the European Union differ markedly, with some of those of the former communist states in Eastern Europe bringing down the average.
Sudanese political cartoonist Khalid Albaih is in self-imposed exile in Denmark as his social and political commentaries convey scathing criticisms of authoritarianism.
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