Last year, President Trump reportedly floated the idea of buying Greenland from Denmark, even after he was told it was not for sale. This summer on a trip to Denmark, Secretary of State Mike Pompeo was asked again about the President's interest in buying Greenland -- and Pompeo did not shut it down. Chris Cillizza explains what exactly is going on with Trump and Greenland, and why this idea just won't go away.

Source: CNN