Oman’s new Sultan, Haitham bin Tariq al-Said, promised on Saturday to uphold Muscat's policy of peaceful coexistence and friendly relations with all nations while further developing Oman.
"We will continue to assist in resolving disputes peacefully," he said in a televised speech.
Oman declared three days of official mourning with flags to be flown at half-mast for Sultan Qaboos bin Said who died on Friday.
Qaboos was buried at the royal cemetery on Saturday.
A family council convened on Saturday and chose Haitham after opening a sealed envelop in which Qaboos had secretly written his recommendation in case the family could not agree, opting to follow his "wise" guidance, state media said.
"Haitham bin Tariq was sworn in as the new sultan of the country... after a meeting of the family which decided to appoint the one who was chosen by the sultan," the government said in a tweet.