President-elect Donald Trump made clear again this week that he'd like the semiautonomous territory of Denmark to come under U.S. control.

Fox News national security correspondent Jennifer Griffin reports on Donald Trump Jr.'s trip to Greenland and what acquiring the mineral-rich country would mean for U.S. defenses.

European leaders reacted to Trump's statement at a press conference on Tuesday that he would not rule out military action to take control of Greenland. He had earlier vowed to slap high tariffs on Denmark if it refused to cede its autonomous territory.