Covering an area of 1,648,000 square kilometers, the Islamic Republic of Iran is located in southwestern Asia. The Caspian Sea, Turkmenistan, Azerbaijan and Armenia in the north; Afqanistan and Pakistan in the east; Turkey and Iraq in the west surround the country. On the south Iran borders the Persian Gulf and the Sea of Oman. Total terrestrial borders of the country are 5,170 km. and total water borders are 2,510 km.
Iran (i/ɪˈrɑːn/ or /aɪˈræn/; Persian [ʔiˈɾɒn]) or Persia (/ˈpɜrʒə/ or /ˈpɜrʃə/), officially the Islamic Republic of Iran, is a country in Western Asia. The country is bordered on the north by Armenia, Azerbaijan and Turkmenistan. As Iran is a littoral state of the Caspian Sea, which is an inland sea, Kazakhstan and Russia are also Iran's direct neighbors to the north. Iran is bordered on the east by Afghanistan and Pakistan, on the south by the Persian Gulf and the Gulf of Oman, on the west by Iraq and on the northwest by Turkey.
The 18th-largest country in the world in terms of area at 1,648,195 km2 (636,372 sq mi), Iran is an ethnically diverse country and has a population of around 90 million. It is a mountainous country of particular geopolitical significance owing to its location in three spheres of Asia. Tehran is the capital, the country's most populous city and the political, cultural, commercial and industrial center of the nation. Known as a developing country, Iran is a regional power, and holds an important position in international energy security and world economy as a result of its large reserves of petroleum and natural gas. Iran has the second largest proven natural gas reserves in the world and the fourth largest proven petroleum reserves.
