Muhammadu Buhari, Muhammadu also spelled Muhammad (born December 17, 1942, Daura, Nigeria), Nigerian military leader and politician, who served as head of state in 1984–85 and became president of Nigeria in 2015.Educated largely in Katsina, Buhari took military training in Kaduna as well as in Great Britain, India, and the United States. He was involved in the military coup that ousted Yakubu Gowon in 1975 and was appointed military governor of North Eastern state (now Borno) that same year. He was appointed federal commissioner for petroleum resources by Gen. Olusegun Obasanjo, who became military head of state when Gowon’s successor, Murtala Mohammed, was assassinated in 1976. By 1977 Buhari had become the military secretary at Supreme Military Headquarters, which was the seat of government. By September 1979 he had returned to regular army duties and commanded a division based in Kaduna. Although civilian government had returned to Nigeria in 1979 with the election of Shehu Shagari, dissatisfaction with dismal economic conditions and what the military perceived as corrupt politicians led to another military coup on December 31, 1983, and Buhari was chosen unanimously to be the new head of state.Many of the economic problems that had existed under the Shagari administration also plagued the Buhari regime, and Buhari instituted austerity measures. He took a tough stance on corruption: during his tenure, hundreds of politicians and business officials were tried and convicted or awaited trial on corruption-related charges. His regime launched the “War Against Indiscipline,” a program which sought to promote positive values in Nigerian society, although authoritarian methods were sometimes used in the program’s implementation. In an effort to stop dissent against his policies, Buhari instituted restrictions on the press, political freedoms, and trade unionists.Although many Nigerian citizens had initially welcomed Buhari’s efforts to root out corruption and improve societal values, the repressive measures employed by his regime, against a backdrop of continuing economic troubles, led to discontent. By August 1985 even the military had had enough, and on August 27 Maj. Gen. Ibrahim Babangida took control of the government. Buhari was detained in Benin City but was released at the end of 1988. In 2003 Buhari ran for president and was defeated by the incumbent, Olusegun Obasanjo of the People’s Democratic Party (PDP). Buhari ran again in 2007 but was defeated by the PDP’s candidate, Umaru Yar’Adua, in an election that was strongly criticized by international observers as being marred by voting irregularities. Buhari also stood in the 2011 presidential election, which was praised for largely being transparent, free, and fair, but he again lost to the PDP’s candidate, incumbent Goodluck Jonathan.In 2014 the All Progressives Congress (APC) party nominated Buhari to stand as its candidate in the 2015 presidential election. His reputation for being incorruptible and his military background made him an attractive candidate, whom many Nigerians hoped might be able to more effectively handle the threat posed by the Islamic militant group Boko Haram, whose violent acts had terrorized parts of the country in recent years. The March 28 presidential election had 14 candidates, although the real contest was seen as being between Buhari and Jonathan, who was again the PDP’s candidate. In what was Nigeria’s most closely fought election ever, Buhari garnered the most votes—some 2.5 million more than Jonathan, his closest competitor—and was declared the winner. His win marked the first time that the incumbent president had been defeated in Nigeria. Buhari was inaugurated on May 29, 2015.