President Trump and the leaders of Greenland and Denmark signed an agreement that permits a larger US military presence on Greenland and may resolve a standoff over the strategically located and mineral-rich island ↧ Trump, Greenland, Denmark sign deal in bid to end Arctic standoff US President Donald Trump and the leaders of Greenland and Denmark signed an agreement on Tuesday ​that permits a larger US military presence on Greenland and may resolve a standoff over the strategically located and mineral-rich island.