France's President Francois Hollande (R) poses for a picture with Qatar's Attorney General Ali bin Mohsen bin Fetais al-Marri (L) at the Voltaire Qatari-French School as part of a two-day official visit in Doha on June 22, 2013. Hollande arrived in Qatar for talks on the deadly Syrian conflict and economic ties with the gas-rich Gulf state. (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.