► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Markets have had a turbulent week, with oil prices hitting their lowest levels in almost four years and the International Monetary Fund cutting its global growth forecast. The FT's Ralph Atkins and James Mackintosh discuss the gloomy outlook.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes