Greenland’s elected leader said the gigantic Arctic island is not for sale after Donald Trump once again raised the issue of “ownership and control” of the vast territory that has been part of Denmark for more than 600 years.

“Greenland is ours. We are not for sale and will never be for sale. We must not lose our long struggle for freedom,” Greenland’s prime minister, Múte Egede, said in a written comment.

The US president-elect on Sunday announced that he had picked Ken Howery, a former envoy to Sweden, as his ambassador to Copenhagen, and commented on the status of Greenland, a semi-autonomous part of Denmark.

“For purposes of National Security and Freedom throughout the World, the United States of America feels that the ownership and control of Greenland is an absolute necessity,” Trump wrote on Truth Social.