Chad is a country in Africa bordering Libya. The Central Intelligence Agency (CIA) is the main intelligence agency of the United States of America. The CIA was active in Chad in the 1980s, due to what the US perceived as a strategic interest in limiting the power of its opponent Muammar Gaddafi, who had ruled Libya since 1969. Background Libya invaded Chad in July 1975 in an attempt to drive out Habré, occupying and annexing the Aozou Strip. France and the United States responded by aiding Chad in an attempt to contain Libya's regional ambitions. On August 29, 1978, Hissène Habré, who was pro-Western, was given the post of prime minister of Chad, replacing Félix Malloum in that position; Malloum had been both prime minister and president since 1975. Habré's term as prime minister ended, however, a year later, when Malloum's government was replaced by that of Goukouni Oueddei, who leaned more towards Libya. On December 15, 1980, Libya occupied all of northern Chad, but Habré defeated Libyan troops and drove them out in November 1981. 1981 Human Rights Watch said "the United States helped Habré take power in the first clandestine operation launched by Ronald Reagan's CIA chief, William J. Casey, when he took over the agency in 1981. The purpose, according to Secretary of State Alexander Haig, was to "bloody Khadaffi's nose." The United States later provided Habré with tens of millions of dollars per year in military assistance, even after it became clear that Habré was committing atrocities against his own people." 1982 Habré deposed Oueddei on June 7, 1982 and the FAN leader became president; the post of prime minister was abolished. There followed a period of turmoil. Habré created the secret police force, the Documentation and Security Directorate (DSD) and many opponents of Habré were executed. It also is believed that thousands of people from tribes Habré thought hostile to the regime were killed. It is estimated that Habré's government carried out 40,000 politically motivated killings and over 200,000 cases of torture, leading Human Rights Watch to dub him "Africa's Pinochet." 1983 In 1983, Libyan troops occupied all of the country north of Koro Toro. The United States used a clandestine base in Chad to train captured Libyan soldiers whom it was organizing into an anti-Gaddafi force. The US provided military aid and gave support to the DSD, according to The Washington Post. 1985 "One