The US president’s aggressive campaign for control of Greenland has plunged transatlantic relations into an unprecedented crisis. Denmark and its European neighbours remain on tenterhooks. Our network, like much of the world’s media, attempts to get to the bottom of US President Donald Trump's desire to wrest this so-called “piece of ice” from the hands of a longstanding ally. An episode by Joanna Neville, brought to you by Euranet Plus. Image © wz94 / Shutterstock