President-elect Donald Trump took aim at Canada, Greenland and the Panama Canal in a series of Christmas Day social media posts that suggested the United States could take control of all three.

In recent days the president-elect has called for asserting U.S. control over the Panama Canal and Greenland, showing that his “America First” philosophy has an expansionist dimension.

President-elect Donald Trump’s tough talk about Greenland and the Panama Canal shows that he’s most comfortable playing offense, even if nothing much comes of it.