Trump wants to buy Greenland again. Here's why he's so interested in the world's largest island

CNN — On Tuesday, Donald Trump Jr. landed in Greenland, the Arctic island his father, President-elect Donald Trump, has expressed a strong desire to purchase, despite sharp statements from Greenland that it is not for sale. Trump Jr. framed the trip as "a little bit of fun," telling CNN, "as an outdoorsman, I'm excited to stop into Greenland for this week." But the trip has fueled speculation about what exactly his father's plans are for this Arctic territory. In December, Trump revived calls made in his first presidency for US ownership of Greenland, calling it "an absolute necessity." On Monday,…