President Donald Trump told NATO Secretary-General Mark Rutte on Thursday that U.S. control of Greenland is necessary to enhance international security, escalating his campaign to annex the strategic Arctic island.

The New York Times said the party was likely to enter a coalition with Inuit Ataqatigiit, a moderate party that came in third in this week’s election with 21.4% of the vote. Its leader is the current prime minister, Múte Egede, who has also dismissed joining the United States.

The leader of the winning party said he hoped the election would send a clear message to Trump that Greenland was “not for sale” and Greenlanders “don’t want to be Americans.”