Lt Chesterman studied mechanical engineering at the University of Southampton before attending the Britannia Royal Naval College and the Royal Military Academy Sandhurst.

BBC: Lt Andrew Chesterman

The current sultan trained as an officer at the Royal Military Academy Sandhurst in the UK and served in the British Army in the early 1960s.

ECONOMIST: Oman preserves friendly ties with both Iran and the West

He worked in the Ministry of Defense under the Communists, is a graduate of the Royal Military Academy at Sandhurst, and has studied in the United States.

NEWYORKER: After America