Located in the Middle East at the eastern tip of the Arabian Peninsula, the thriving nation of the United Arab Emirates (UAE), or simply the Emirates, is a federal, elective monarchy made up of seven emirates (autonomous city-states) namely Abu Dhabi, Dubai, Sharjah, Ajman, Umm al-Quwain, Ras al-Khaimah, and Fujairah. In addition to marine boundaries in the Persian Gulf with Qatar and Iran, as well as with Oman in the Gulf of Oman, it shares land borders with Oman to the east and northwest and with Saudi Arabia to the southwest. The largest of the seven emirates, Abu Dhabi is the capital of UAE, and the most populous port city of Dubai is an international financial and commercial hub housing hundreds of global companies in a forest of skyscrapers.