sentences:  The title the "White Sultan" was regarded with bemusement by Landon, who maintained that Sultan Qaboos was very much in charge of Oman's destiny, and he was simply a servant and friend there to give advice.He continued to shuttle between London and Muscat until he died, his Boeing often seen arriving at or leaving Farnborough, the nearest airport to his home.Landon invested the money he had made during his time in Oman, diversifying his wealth into mineral exploration and farming in Africa, property and real estate investments in Europe and America, and a wide range of financial portfolios in global markets.