The Somali Civil War began in 1991 after the overthrow of dictator Siad Barre's regime. Barre had ruled Somalia since 1969 with Soviet support but faced increasing opposition after launching unsuccessful invasions of Ethiopia in the 1970s and 1980s. As clan opposition grew, Barre responded with violent crackdowns against real or imagined threats, exacerbating conflict along clan lines. After Barre's fall, Somalia lacked a stable national government for over 20 years as different clans fought for control of resources, leading to hundreds of thousands of deaths. The civil war continued into the 2000s with shifting alliances and the rise of militant groups like al-Shabaab.