The United Arab Emirates, sometimes simply called the Emirates, is a country in Western Asia located at the eastern end of the Arabian Peninsula. It borders Oman and Saudi Arabia, and has maritime borders in the Persian Gulf with Qatar and Iran. It is a federal elective constitutional monarchy formed from a federation of seven emirates, consisting of Abu Dhabi, Ajman, Dubai, Fujairah, Ras Al Khaimah, Sharjah and Umm Al Quwain. Their boundaries have numerous enclaves within each other. Each emirate is governed by a ruler, who together form the Federal Supreme Council, and one of whom serves as President of the United Arab Emirates. In 2013, the UAE's population was 9.2 million, of which 1.4 million were Emirati citizens and 7.8 million were expatriates. The estimated population of the UAE in 2020 was 9.89 million.