Donald Trump’s favourite President, William McKinley, added Hawaii, Puerto Rico, Guam and the Philippines to the American fief at the turn of the twentieth century. Trump once saw Greenland on a map and reportedly said: ‘Look at the size of this. It’s massive! That should be part of the United States’? Two years later, his language is stronger: ‘For purposes of national security and freedom throughout the world, the United States of America feels that the ownership and control of Greenland is an absolute necessity.’