The Iranian government established the Ministry of Defense and Armed Forces Logistics (MODAFL) in 1989 to create a unified command-and-control structure for Iran's armed forces. [1] Although MODAFL technically controls the Revolutionary Guards Corps (IRGC), the IRGC in fact enjoys substantial autonomy and pursues separate defense projects. [2] The Defense Industries Organization (DIO), the Aerospace Industries Organization (AIO), and the Defense Technology and Science Research Centre (DTSRC) are all subordinate to MODAFL, giving it operational control over Iran's ballistic missile development program. [3] MODAFL entities' illicit procurement activities have resulted in a series of ongoing U.S. sanctions. [4]

Sources:
[1] Steven R. Ward, Immortal: A Military History of Iran and Its Armed Forces (Washington, DC: Georgetown University Press, 2009), p. 320.
[2] Steven R. Ward, Immortal: A Military History of Iran and Its Armed Forces (Washington, DC: Georgetown University Press, 2009), p. 320.
[3] U.S. Department of the Treasury, "Fact Sheet: Designation of Iranian Entities and Individuals for Proliferation Activities and Support for Terrorism," Washington, DC, 25 October 2007, www.ustreas.gov.
[4] The United States has sanctioned MODAFL pursuant to the Arms Export Control Act and the Export Administration Act (in November 2000), and pursuant to executive order 13382 (in October 2007). U.S. Department of State, "Missile Sanction Laws," www.state.gov.