Although this was an unofficial visit for 4 or 5 hours, its an interesting development.   Click Here   

And Prez Trump himself spoke to a group of Greenland citizens over the phone. 

He said:  "I just want to say it's a very special place. It needs security for itself, but it also needs security very much for the world. You see the people and the ships sailing around, and they're not the right ships, and they're not the ships you wanna know about," the president-elect told the group. "So we need security. Our country needs it, and the whole world needs it — you're so strategically located."  

Here's a 2 min. summary of Don Jr's trip