The Islamic Republic of Iran Broadcasting (IRIB) (, "Sedā va Sīmā-ye Jomhūri-ye Eslāmi-ye Īrān", lit. "Voice and Vision of the Islamic Republic of Iran", formerly called National Iranian Radio and Television until the Iranian revolution of 1979) is an Iranian state-controlled media corporation which holds a monopoly of domestic radio and television services in Iran, and is also among the largest media organizations in the Asian and Pacific regions, and a regular member of Asia-Pacific Broadcasting Union. IRIB is independent of the Iranian government, but its head is appointed directly by the Supreme Leader, Ayatollah Ali Khamenei.