► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Neil Hume talks to David MacLennan, chief executive of Cargill, the world's largest agriculture trader, about the faltering Chinese economy and possible opportunities in Iran and Cuba.<br /><br />► FT World News: http://bit.ly/1Exp0iJ<br /><br />► FT Business: http://bit.ly/1KUK08s<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes