(AP) — Officials from Greenland and Denmark met in Washington on Wednesday with top White House officials as President Donald Trump moved to ratchet up the pressure by suggesting that NATO should help the United States acquire the world’s largest island and saying anything less than it being under American control is unacceptable.

Vice President JD Vance and Secretary of State Marco Rubio are participating in the talks with Danish Foreign Minister Lars Løkke Rasmussen and Greenlandic Foreign Minister Vivian Motzfeldt to discuss Greenland, a semiautonomous territory of NATO ally Denmark.

A few hours before the talks could begin, Trump reiterated on his social media site that the U.S. “needs Greenland for the purpose of National Security.” He added that “NATO should be leading the way for us to get it” and that otherwise Russia or China would — “AND THAT IS NOT GOING TO HAPPEN!”

In response, Greenland’s representatives to the U.S. and Canada posted on social media, “Why don’t you ask us?” and noted the low percentage of island residents who favor becoming part of the U.S.