In Iran, the Islamic Revolutionary Guard Corps (IRGC) was formed in May 1979 in the immediate aftermath of Shah Mohammad Reza PAHLAVI’s fall, as leftists, nationalists, and Islamists jockeyed for power; while the interim prime minister controlled the government and state institutions, such as the Army, followers of Ayatollah Ruhollah KHOMEINI organized counterweights, including the IRGC, to protect the Islamic revolution; the IRGC’s command structure bypassed the elected president and went directly to KHOMEINI; the IRGC played a critical role in helping KHOMEINI consolidate power in the aftermath of the 1979 revolution, and it ensured that KHOMEINI's Islamic revolutionary vision prevailed against domestic challenges from nationalists and leftist factions in the scramble for control after the Shah's departure

the Iran-Iraq War (1980–88) transformed the IRGC into more of a conventional fighting force with its own ground, air, naval, and special forces, plus control over Iran’s strategic missile and rocket forces; today, the IRGC is a highly institutionalized and parallel military force to Iran’s regular armed forces (Artesh); it is heavily involved in internal security and has significant influence in the political and economic spheres of Iranian society, as well as Iran’s foreign policy; on the economic front, it owns factories and corporations and subsidiaries in banking, infrastructure, housing, airlines, tourism and other sectors; its special operations forces, known as the Qods/Quds Force, specialize in foreign missions and have provided advice, funding, guidance, material support, training, and weapons to militants in countries such as Afghanistan, Iraq, Syria, and Yemen, as well as extremist groups, including HAMAS, Hizballah, Kata’ib Hizballah, and Palestine Islamic Jihad; the Qods Force also conducts intelligence and reconnaissance operations; note - both the IRGC and the Qods Force have been designated as foreign terrorist organizations by the US 

the Supreme Council for National Security (SCNS) is the senior-most body for formulating Iran’s foreign and security policy; it is formally chaired by the president, who also appoints the SCNS secretary; its members include the speaker of the Majles, the head of the judiciary, the chief of the Armed Forces General Staff (chief of defense or CHOD), the commanders of the Artesh (regular forces) and IRGC, and the ministers of defense, foreign affairs, interior, and intelligence; the SCNS reports to the supreme leader; the supreme leader is the commander-in-chief of the armed forces

the Iranian Armed Forces are divided between the regular forces (Artesh) and the IRGC; the Artesh primarily focuses on defending Iran’s borders and territorial waters from external threats, while the IRGC has a broader mission to defend the Iranian revolution from any foreign or domestic threat; in 1989, Iran established the Armed Forces General Staff to coordinate military action across both the Artesh and the IRGC; Iran also has a joint military headquarters, the Khatam ol-Anbia Central Headquarters, to command the Artesh and IRGC in wartime (2024)