Crisis has been the dominant focus of discussions in Davos in recent years. But chief economics commentator and Davos veteran Martin Wolf tells Daniel Garrahan this year's event will be more about how the world responds to new challenges.<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