The Supreme Revolutionary Council seized power in 1969 and established the Somali Democratic Republic, brutally attempting to squash the Somaliland War of Independence in the north of the country. The SRC subsequently collapsed 22 years later, in 1991, with the onset of the Somali Civil War and Somaliland soon declared independence. During this period most regions returned to customary and religious law. In the early 2000s, a number of interim federal administrations were created. The Transitional National Government (TNG) was established in 2000, followed by the formation of the Transitional Federal Government (TFG) in 2004, which reestablished the Somali Armed Forces. In 2006, with a US backed Ethiopian intervention, the TFG assumed control of most of the nation's southern conflict zones from the newly formed Islamic Courts Union (ICU). The ICU subsequently splintered into more radical groups, such as Al-Shabaab, which battled the TFG and its AMISOM allies for control of the region.