Oman, officially the Sultanate of Oman, is a country located on the southeastern coast of the Arabian Peninsula in West Asia and the Middle East. It shares land borders with Saudi Arabia, the United Arab Emirates, and Yemen. Oman’s coastline faces the Arabian Sea to the southeast and the Gulf of Oman on the northeast. The exclaves of Madha and Musandam are surrounded by the United Arab Emirates on their land borders, while Musandam’s coastal boundaries are formed by the Strait of Hormuz and the Gulf of Oman. The capital and largest city is Muscat. With a population of approximately 5.46 million and an area of 309,500 km² (119,500 sq mi), Oman is the 123rd most-populous country.

From the 18th century, the Omani Sultanate was an empire, competing with the Portuguese and British empires for influence in the Persian Gulf and the Indian Ocean. At its peak in the 19th century, Omani influence and control extended across the Strait of Hormuz to Iran and Pakistan, and as far south as Zanzibar. In the 20th century, the sultanate came under British influence. For over 300 years, the relations built between the two empires were based on mutual benefit.