Donald Trump’s focus on Greenland highlights its strategic importance, vast resources, and role in Arctic geopolitics. A deep dive into his ambitions, whether he can actually buy Greenland and what it means for U.

President-elect Donald Trump's idea of acquiring Greenland comes as the Arctic region grows in strategic importance for economic and military reasons. He's already meeting resistance.

Alex Wagner breaks down the origins of Trump's interest in taking over Greenland and the Panama Canal and why its serious, however ridiculous the idea may be.