I.

Introduction

Iran, officially Islamic Republic of Iran, republic in the Middle East, bordered to the north by Armenia, Azerbaijan, Turkmenistan, and the Caspian Sea; to the east by Afghanistan and Pakistan; to the south by the Gulf of Oman, the Strait of Hormuz, and the Persian Gulf; and to the west by Iraq and Turkey. The country was a constitutional monarchy ruled by a shah from 1906 until 1979, when a popular uprising led by Islamic religious leaders resulted in the establishment of an Islamic republic. The area of Iran is 1,648,000 sq km (636,300 sq mi). Until the 1930s Iran was known abroad as Persia. The capital and largest city is Tehran.