Economist Yanis Varoufakis says we shouldn't underestimate Trump - he has a plan to shock the global economy, force foreign countries to buy crypto-currency in return for a deal on tariffs, and ultimately pay down debt and keep the US dollar at the centre of the global financial system. But it's a high risk strategy that also paves the way for the "tech bros" to make a lot of money.   

• GUEST: Yanis Varoufakis, Professor of Economics at the University of Athens, Co-Founder of the political movement DiEM25 and author of Technofeudalism - What Killed Capitalism. 
• PRODUCER: Catherine Zengerer