Denmark's government has proposed purchasing two new Arctic inspection vessels and increasing dog sled patrols to boost its military presence in Greenland, as U.S. President-elect Donald Trump sets his sights on the island,

President-elect Donald Trump Tuesday threatened to place new tariffs on imports from Denmark unless the country gives up control of Greenland, news that dented the stocks of some of Denmark’s most important companies and underscored Trump’s focus on geopolitical competition.

It’s been a while since Denmark has been the object of Donald Trump’s enduring obsession with Greenland and needing to remind the returning president repeatedly that the world’s largest island isn’t for sale.