What are the biggest risks to the global economy in 2018? Ed Butler is joined by some of the world's leading economists and political scientists to ask the key questions that will affect us all in the year ahead. Ed hears from Ian Bremmer, American political scientist and the President and founder of Eurasia Group, a political risk research firm; Megan Greene, Chief Economist at Manulife and John Hancock Asset Management in the USA and Guntram Wolf, Director of Bruegel, a leading European think tank, focussing on economics and politics. Comedian Colm O'Regan chips in from Dublin with his take on how the world is changing as 2018 gets underway.

(Picture: US President Donald Trump and China's President Xi Jinping attend a business leaders event inside the Great Hall of the People in Beijing on November 9, 2017. Credit: AFP/Getty Images)