The Army of the Guardians of the Islamic Revolution is a branch of Iran's military, founded after the Iranian revolution. Sep h is thought to number as many as 120,000 with its own small naval and air units. It also controls the paramilitary Basij militia, and in recent years has developed into a "multibillion-dollar business empire." The Chief Commander of the Guardians is Mohammed Ali Jafari, who was preceded by Yahya Rahim Safavi. Like many young Iranians during the 1980-88 Iran Iraq War, Iran's president Mahmoud Ahmadinejad was a member of the Army of Guardians, in the Basij militia. In recent years the Iranian Revolutionary Guard Corps has become a vast military-based conglomerate. It is active in oil and gas, telecom, and farming, to name a few sectons, and has considerable economic and political influence. Since its origin as an ideologically driven militia, the Army of the Guardians of the Islamic Revolution has taken an ever more assertive role in virtually every aspect of Iranian society.