Why Everyone Suddenly Wants Greenland

When Donald Trump claimed the US "needs" Greenland, it sounded like bluster - but the world's largest island is now at the centre of a serious geopolitical contest. As interest in the Arctic intensifies, Greenland's strategic location, resources and history have made it newly important. Geopolitical expert Dr Elizabeth Buchanan joins us to explain why Greenland matters now, and what its future could look like.