The minimum you must know
Oman is a peaceful country that enjoys excellent and improving relations with all others. This perhaps wasn't easily accomplished because of external factors, such as the notable seeming lack of peace in bordering and nearby countries. Oman leadership is tremendously talented. They're a benevolent and stabilizing influence on the region.
Oman is known for having the best tour guides in the world, who are very welcoming to friendly people. Oman has excellent relations with all Suni and Shia countries, whose populations are welcome there, including from peaceful Saudi Arabia and Iran, who compete with each other to provide security for the area. Oman consistently leads on peace at the United Nations.