Sultan Qaboos, the longest-reigning leader of the modern Arab world, has died at the age of 79, Oman's royal court said on Saturday. "With great sorrow and deep sadness... the royal court mourns His Majesty Sultan Qaboos bin Said, who passed away on Friday," the court said in a statement, as discussions on a successor commenced. Qaboos, who has ruled since 1970 when he deposed his father in a palace ...