Siad Barre in the context of "Somali Democratic Republic"

A failed state is a state that has lost its ability to fulfill fundamental security and development functions, lacking effective control over its territory and borders. Common characteristics of a failed state include a government incapable of tax collection, law enforcement, security assurance, territorial control, political or civil office staffing, and infrastructure maintenance. When this happens, widespread corruption and criminality, the intervention of state and non-state actors, the appearance of refugees and the involuntary movement of populations, sharp economic decline, and military intervention from both within and outside the state are much more likely to occur.

Originating in the 1990s, the term was initially applied to characterize the situation in Somalia. The country descended into disorder following a coup that ousted its dictator, Siad Barre, in 1991, leading to internal conflicts among the country's clans. In the early 2020s, Afghanistan, the Central African Republic, the Democratic Republic of the Congo, Haiti, Libya, Mali, Myanmar, Somalia, South Sudan, Sudan, Syria, and Yemen have all been described as failed states. There are concerns that Venezuela may be on path to becoming a failed state in the near future.

Somalia, officially the Federal Republic of Somalia, is the easternmost country in continental Africa. Stretching across the Horn of Africa, it borders Ethiopia to the west, Djibouti to the northwest, Kenya to the southwest, the Gulf of Aden to the north, and the Indian Ocean to the east. Somalia has the longest coastline on Africa's mainland. Somalia has an estimated population of 18.1 million, of which 2.7 million live in the capital and largest city, Mogadishu. As one of Africa's most ethnically homogenous countries, around 85% of its residents are ethnic Somalis. The official languages of the country are Somali and Arabic, though Somali is the main language. Somalia has historic and religious ties to the Arab world. The overwhelming majority of the population are Sunni Muslims.

In antiquity, Somalia was an important commercial centre. During the Middle Ages, several powerful Somali empires dominated the regional trade, including the Ajuran Sultanate, Adal Sultanate, and the Sultanate of the Geledi. In the late 19th century, the Somali sultanates were colonised by the Italian and British empires, who merged all of these tribal territories into two colonies: Italian Somaliland and British Somaliland. In 1960, the two territories united to form the independent Somali Republic under a civilian government. Siad Barre of the Supreme Revolutionary Council (SRC) 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 collapsed in 1991 with the onset of the Somali Civil War. The Transitional National Government of Somalia (TNG) was established in 2000, followed by the formation of the Transitional Federal Government of Somalia (TFG) in 2004, which reestablished the Somali Armed Forces.

The Somali Civil War (Somali: Dagaalkii Sokeeye ee Soomaaliya; Arabic: الحرب الأهلية الصومالية al-ḥarb al-’ahliyya aṣ-ṣūmāliyya) is an ongoing civil war that is taking place in Somalia. It grew out of resistance to the military junta which was led by Siad Barre during the 1980s. From 1988 to 1990, the Somali Armed Forces began engaging in combat against various armed rebel groups, including the Somali Salvation Democratic Front in the northeast, the Somali National Movement in the Somaliland War of Independence in the northwest, and the United Somali Congress in the south. The clan-based armed opposition groups overthrew the Barre government in 1991.

Various armed factions began competing for influence in the power vacuum and turmoil that followed, particularly in the south. In 1990–92, customary law temporarily collapsed, and factional fighting proliferated. In the absence of a central government, Somalia became a "failed state". This precipitated the arrival of UNOSOM I UN military observers in July 1992, followed by the larger UNITAF and UNOSOM II missions. Following an armed conflict between Somali insurgents and UNOSOM II troops during 1993, the UN withdrew from Somalia in 1995. After the central government's collapse and the withdrawal of UN forces, there was some return to customary and religious law in most regions. In 1991 and 1998, two autonomous regional governments were also established in the northern part of the country: Somaliland and Puntland. In the south Islamic Sharia courts began proliferating in response to lawlessness. This led to a relative decrease in the intensity of the fighting, with the Stockholm International Peace Research Institute removing Somalia from its list of major armed conflicts for 1997 and 1998.

The Somaliland War of Independence (Somali: Dagaalkii Xoraynta Soomaaliland, lit. 'Somaliland Liberation War') was a rebellion waged by the Somali National Movement (SNM) against the ruling military junta in Somalia led by General Siad Barre lasting from its founding on 6 April 1981 and ended on 18 May 1991 when the SNM declared what was then northern Somalia independent as the Republic of Somaliland. The conflict served as the main theater of the larger Somali Rebellion that started in 1978. The conflict was in response to the harsh policies enacted by the Barre regime against the main clan family in Somaliland, the Isaaq, including a declaration of economic warfare on the clan-family. These harsh policies were put into effect shortly after the conclusion of the disastrous Ogaden War in 1978.

As a direct response to the harsh policies enacted by the Barre regime against the Isaaq people, in April 1981 a group of Isaaq businesspeople, students, former civil servants and former politicians founded the Somali National Movement in London. From February 1982, Isaaq army officers and fighters started moving into Ethiopia where they formed the nucleus of what would later become the armed wing of the SNM. Throughout the early to mid 1980s SNM launched a guerrilla war against the Barre regime through incursions and hit and run operations on army positions within Isaaq territories, especially into the Waqooyi Galbeed and Togdheer regions.

The Somali Armed Forces are the military forces of the Federal Republic of Somalia. Headed by the president as commander-in-chief, they are constitutionally mandated to ensure the nation's sovereignty, independence and territorial integrity.

In 1990 the Armed Forces were made up of the Army, Air Force, Air Defence Force, and Navy. From the early 1960s to 1977, the periodwhen good relations existed between Somalia and the Soviet Union, the Armed Forces had the largest armored and mechanized force in sub-Saharan Africa. Due to Barre's increasing reliance on his own clan, splitting the Armed Forces along clan lines, and the Somali Rebellion, by 1988 they began to disintegrate. By the time President Siad Barre fled Mogadishu in January 1991, the last cohesive army grouping, the 'Red Berets,' had deteriorated into a clan militia.

The Somali National Movement (Somali: Dhaqdhaqaaqa Wadaniga Soomaaliyeed, Arabic: الحركة الوطنية الصومالية) was one of the first and most important organized guerilla groups and Mujahideen groups that opposed the Siad Barre regime in the 1980s to the 1990s, as well as being the main anti-government faction during the Somaliland War of Independence. The organisation was founded in London, England, on April 6, 1981 by Hassan Isse Jama, Hassan Adan Wadadid, and Ahmed Mohamed Gulaid and other former Somali diplomats, who stated that initially the group's purpose was to overthrow the Siad Barre regime.

In May 1991, the organisation declared an independent Republic of Somaliland in the region that had constituted British Somaliland before independence and unification with the former colony of Italian Somaliland in 1960 after the Somaliland War of Independence.

The United Somali Congress (USC, Somali: Golaha Midnimayada Soomaaliyeed) was one of the major rebel organizations in Somalia. Formed in 1989, it played a leading role in the ouster of the government of Siad Barre in 1991. Following infighting, the USC later splintered into two wings, led by Muhammad Farah Aidid and Ali Mahdi Muhammad.

Both Ali Mahdi and Aidid claimed to lead national unity governments, and each vied to lead the reconstruction of the Somali state. In an attempt to expand both their bases through alliances with other armed groups and political entities, Aidid's USC wing morphed into the Somali National Alliance (SNA) faction, while Mahdi's wing became the Somali Salvation Alliance (SSA).