Within the first year of independence, several events destabilized the country: the army mutinied; the governor of Katanga province attempted secession; a UN peacekeeping force was called in to restore order; Prime Minister Lumumba died under mysterious circumstances; and Col. Joseph Mobutu (later Mobutu Sese Seko) took over the government and ceded it again to President Kasavubu.
Unrest and rebellion plagued the government until 1965, when Lieutenant General Mobutu, by then commander in chief of the national army, again seized control of the country and declared himself president for 5 years. Mobutu quickly centralized power into his own hands and was elected unopposed as president in 1970. Embarking on a campaign of cultural awareness, Mobutu renamed the country the Republic of Zaire and required citizens to adopt African names. Relative peace and stability prevailed until 1977 and 1978 when Katangan rebels, staged in Angola, launched a series of invasions into the Katanga region. The rebels were driven out with the aid of Belgian paratroopers.
During the 1980s, Mobutu continued to enforce his one-party system of rule. Although Mobutu successfully maintained control during this period, opposition parties, most notably the Union pour la Democratie et le Progres Social (UDPS), were active. Mobutu's attempts to quell these groups drew significant international criticism.
As the Cold War came to a close, internal and external pressures on Mobutu increased. In late 1989 and early 1990, Mobutu was weakened by a series of domestic protests, by heightened international criticism of his regime's human rights practices, and by a faltering economy. In May 1990 Mobutu agreed to the principle of a multi-party system with elections and a constitution. As details of a reform package were delayed, soldiers in September 1991 began looting Kinshasa to protest their unpaid wages. Two thousand French and Belgian troops, some of whom were flown in on U.S. Air Force planes, arrived to evacuate the 20,000 endangered foreign nationals in Kinshasa.
In 1992, after previous similar attempts, the long-promised Sovereign National Conference was staged, encompassing over 2,000 representatives from various political parties. The conference gave itself a legislative mandate and elected Archbishop Laurent Monsengwo as its chairman, along with Etienne Tshisekedi, leader of the UDPS, as prime minister. By the end of the year Mobutu had created a rival government with its own prime minister. The ensuing stalemate produced a compromise merger of the two governments into the High Council of Republic-Parliament of Transition (HCR-PT) in 1994, with Mobutu as head of state and Kengo Wa Dondo as prime minister. Although presidential and legislative elections were scheduled repeatedly over the next 2 years, they never took place.
By 1996, tensions from the neighboring Rwanda war had spilled over to Zaire. Rwandan Hutu militia forces (Interahamwe), who had fled Rwanda following the ascension of a Tutsi-led government, had been using Hutu refugees camps in eastern Zaire as a basis for incursion against Rwanda. These Hutu militia forces soon allied with the Zairian armed forces (FAZ) to launch a campaign against Congolese ethnic Tutsis in eastern Zaire. In turn, these Tutsis formed a militia to defend themselves against attacks.
The Tutsi militia was soon joined by various opposition groups and supported by several countries, including Rwanda and Uganda. This coalition, led by Laurent-Desire Kabila, became known as the Alliance des Forces Democratiques pour la Liberation du Congo-Zaire (AFDL). The AFDL, now seeking the broader goal of ousting Mobutu, made significant military gains in early 1997. Following failed peace talks between Mobutu and Kabila in May 1997, Mobutu left the country, and Kabila marched unopposed to Kinshasa on May 20. Kabila named himself president, consolidated power around himself and the AFDL, and renamed the country the Democratic Republic of Congo.