A man uses Japan's smartphone based social networking service (SNS) 'LINE' in Tokyo on August 3, 2014. A messaging app launched in the aftermath of Japan's 2011 earthquake and tsunami, Line is moving towards a possible dual listing in Tokyo and New York as it jostles for space in an increasingly crowded and imaginative market. (AFP/Getty Images)
From underwater mining to luxury yachts, Mohammed Al Barwani has interests in a staggering range of industries. The chairman of MB Holding explains how he built the firm from scratch to become a billion-dollar player.