Aftermath of the Iranian Revolution
Following the Iranian Revolution, which overthrew the Shah of Iran in February 1979, Iran was in a "revolutionary crisis mode" until 1982 or 1983 when forces loyal to the revolution's leader, Ayatollah Ruhollah Khomeini, consolidated power. During this period, Iran's economy and the apparatus of government collapsed; its military and security forces were in disarray.
Source: Wikipedia — Aftermath of the Iranian Revolution (CC BY-SA 4.0)