Saudi Arabia, officially the Kingdom of Saudi Arabia , is a country in West Asia. It covers the bulk of the Arabian Peninsula and has a land area of about 2150000 km2 , making it the fifth-largest country in Asia and the largest in the Middle East. It is bordered by the Red Sea to the west; Jordan, Iraq, and Kuwait to the north; the Persian Gulf, Qatar and the United Arab Emirates to the east; Oman to the southeast; and Yemen to the south. Bahrain is an island country off its east coast. The Gulf of Aqaba in the northwest separates Saudi Arabia from Egypt and Israel. Saudi Arabia is the only country with a coastline along both the Red Sea and the Persian Gulf, and most of its terrain consists of arid desert, lowl steppe, and mountains. Saudi Arabia's capital and largest city is Riyadh; the kingdom is also the location of Islam's two holiest cities of Mecca and Medina.