The United Arab Emirates is located in the Middle East between Oman and Saudi Arabia. It has a hot, arid climate and flat coastal plains that give way to desert interior. The UAE population is around 7.9 million, with Emiratis making up 19% and the rest being other Arab, South Asian and Western expatriates. The official language is Arabic but English and other languages are also widely spoken. The economy relies heavily on oil production and refining, with Abu Dhabi producing nearly half the country's oil. The UAE is a federation of seven emirates with power shared between federal and local governments. Islam is the dominant religion.