US President Donald Trump shakes hands with Greenland's Prime Minister Jens-Frederik Nielsen as Denmark's Prime Minister Mette Frederiksen looks on during the signing ceremony for their trilateral security agreement in New York on Sept. 22, 2026.Brendan Smialowski/AFP via Getty Images

Trump’s Greenland deal, explained  – POLITICO

· POLITICO

Eight months after Donald Trump almost destroyed NATO by threatening to annex Greenland — by force, if necessary — he signed what he called a “fantastic” new deal that would give the U.S. all the control and military access it needs over the Danish territory.

European allies were so alarmed by Trump’s apparent determination to take the territory at the start of the year — and his threat of 25% tariffs on anyone who got in his way — that they began talking about a future for the West without America. In many ways, the transatlantic relationship has not been the same since. 

Tuesday’s agreement on security in the Arctic and North Atlantic, signed at the United Nations by Trump and the prime ministers of Greenland and Denmark, ends the dispute. But what exactly is in the deal? Who will pay for it? And who are the winners and losers from months of high-stakes talks?