Outline of Iran

[2] Iran's population is about 83,500,000;[3] and is the 18th largest country in the world in terms of area at 1,648,195 square kilometres (636,372 sq mi).

Iran is home to one of the world's oldest continuous major civilizations, with historical and urban settlements dating back to 4000 BC.

[4][5][6] Throughout history, Iran has been of geostrategic importance because of its central location in Eurasia and is a regional power.

[7][8] The political system of Iran, based on the 1979 Constitution, comprises several intricately connected governing bodies.

The highest state authority is the Supreme Leader, currently Ayatollah Ali Khamenei.