But not everyone is sure that President-elect Donald Trump’s talk of annexing Canada and Greenland and reclaiming the Panama Canal is driven by a deeper strategy.

Global warming is making both places more important to global shipping and trade. To imagine the kind of future a hotter, dryer climate may bring, and the geopolitical challenges it will create, look no farther than two parts of the world that Donald Trump wants America to control: Greenland and the Panama Canal.

Trump again having designs on Greenland comes after the president-elect suggested over the weekend that the U.S. could retake control of the Panama Canal if something isn't done to ease rising shipping costs required for using the waterway linking the Atlantic and Pacific oceans.

Trump combined his Greenland takeover fantasies, Trudeau trolling and Panama Canal gripes into one Christmas wish

President-elect Donald Trump spent Christmas Day laying out his foreign policy aspirations for his second term, including his threat to retake control of the Panama Canal. He also suggested the U.S. could take control of Greenland and Canada.

President-elect Donald Trump appears to be entertaining an American territorial expansion that, if he’s serious, would rival the Louisiana Purchase or the deal that netted Alaska from Russia.

The president-elect is renewing unsuccessful calls he made during his first term for the U.S. to buy Greenland from Denmark, adding to the list of allied countries with which he’s picking fights

National Review staff writer Caroline Downey and former White House official Meghan Hays join 'Mediabuzz' to discuss President-elect Trump insisting on buying Greenland and threatening to seize control of the Panama Canal.