The Islamic Development Organization (سازمان تبلیغات اسلامی), also known as the Islamic Ideology Dissemination Organization (IIDO), is an Iranian religious and cultural organization established on June 22, 1981, following a decree by Supreme Leader Ruhollah Khomeini (روح‌الله خمینی) after the 1979 Revolution. Created in 1981 to promote the ideologies of the Islamic Republic, the organization operates under the direct supervision of Iran’s Supreme Leader as an independent legal entity. IIDO oversees several media outlets, including the English-language Tehran Times, Mehr News Agency (established June 22, 2003), and Tasnim News Agency, which has close ties to the Islamic Revolutionary Guard Corps. The organization’s stated mission includes promoting Islamic culture, defending Islamic principles, and conducting what it calls “surveying misleading advertising and cultural invasion” from political opponents, effectively serving as a state propaganda apparatus.