Berlin Mayor Klaus Wowereit speaks to reporters following a meeting of the governing board of the new Willy Brandt Berlin Brandenburg International Airport at Rotes Rathaus city hall on January 7, 2013 in Berlin, Germany. Officials announced the day before that the opening of the new airport will has been delayed again and will not occur before 2014. (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.