The Gulf nation of Oman has been ruled by Sultan Qaboos since 1970, when he overthrew his own father. The seventy-nine-year-old leader has enjoyed wide popularity, but he has a history of illness. To ensure national stability and continued progress, his successor will have to enact far-reaching economic reforms, aimed especially at broadening the economy beyond its current oil dependence. At the same time, a new sultan will need to navigate challenges posed by powerful neighbors such as Iran, the UAE, and Saudi Arabia.