The Islamic Republic of Iran is a sovereign state in Western Asia, bordered by the Caspian Sea to the north and the Persian Gulf and Gulf of Oman to the south. Since the 1979 Revolution, the country has operated under a unique theocratic-republican political system governed by the principle of Velayat-e Faqih (Guardianship of the Islamic Jurist). The Supreme Leader serves as the head of state and the highest authority, holding ultimate control over the armed forces, the judiciary, and state media. The President is the head of government, elected by popular vote to manage the executive branch and the national budget. Legislative power is held by the Islamic Consultative Assembly (Majlis), though all legislation must be approved by the Guardian Council to ensure compatibility with Islamic law and the Constitution.

The demographics of Iran are characterized by a population of approximately 93 million as of 2026, with a high concentration in urban centers like Tehran, Mashhad, and Isfahan. The nation is ethnically diverse, with Persians making up about 60% of the population, followed by significant Azeri, Kurdish, Lur, Mazandarani, Gilaki, Arab, Baluchi, and Turkmen minorities. Persian (Farsi) is the official language and the primary medium of education and administration, while various Turkic and Iranian languages are spoken regionally. Islam is the official state religion, with the vast majority of the population adhering to the Twelver Shia branch. Small but historically significant religious minorities, including Christians, Jews, and Zoroastrians, are officially recognized and have reserved seats in the Parliament.

Iran’s geography is dominated by a central high plateau surrounded by massive mountain ranges, notably the Alborz in the north and the Zagros in the west and south. The plateau consists of several closed basins containing salt marshes and two vast deserts: the Dasht-e Kavir and the Dasht-e Lut, the latter of which recorded some of the highest surface temperatures on Earth. The northern coastal strip along the Caspian Sea features dense temperate rainforests and a Mediterranean-like climate, providing a sharp contrast to the arid interior. Geologically, the country is highly active and prone to frequent earthquakes due to its position at the intersection of the Arabian and Eurasian tectonic plates. The diverse terrain supports a range of ecosystems, from alpine tundra to tropical coastal plains.