Anne Villamil: University of Iowa Economics Professor on Trump's threat of tariffs over Greenland

US President Donald Trump's delivered his two cents on the state of Europe, as tariff threats over the Greenland issue loom.   Trump's spoken at the World Economic Forum in Switzerland, confirming he still wants to buy and control the Danish territory, but won't use force.   He's already threatened increasing tariffs on eight European countries if he doesn't get a deal.  University of Iowa Economics Professor Anne Villamil told Andrew Dickens the threat of a tariff war is extremely concerning, as it could do a lot of economic damage to the world.  She says everybody involved loses, which is why it’s not something we should be doing.  LISTEN ABOVE See omnystudio.com/listener for privacy information.