US Secretary of Defense Chuck Hagel (2nd-R) walks to speak to U.S. troops at the Kandahar air base, on December 8, 2013 in Kandahar, Afghanistan. Secretary Hagel thanked the troops for their dedication and for being deployed during the holiday season. (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.