RANKING 61 ON Forbes’ Global Rich List with a fortune of $15.3 billion in March 2014, this son of a Saudi father and Ethiopian mother is believed to be the second richest Arab in the world. He has accumulated a portfolio of construction, agriculture and energy companies across Saudi Arabia and Ethiopia, oil refineries in Morocco and Sweden and oil fields off the coast of West Africa. Recent news also suggests he plans to double annual revenue at his Horizon Plantations Ethiopia coffee projects within three years as part of an agricultural investment programme.