President-elect Donald Trump told residents of Greenland that "we're going to treat you well" as his oldest son visited the mineral-rich Danish territory that's home to a large U.S. military base, heightening speculation that the incoming U.S. administration could seek to acquire it.

Donald Trump's eldest son Donald Jr. arrived in Greenland's capital Nuuk on a private visit on Tuesday, a day after the U.S. president-elect reiterated his interest in taking control of the island, an autonomous territory of Denmark.