20th-century presidents of Argentina

Raúl Ricardo Alfonsín (Spanish pronunciation: [raˈul alfonˈsin] ; 12 March 1927 – 31 March 2009) was an Argentine lawyer and statesman who served as President of Argentina from 10 December 1983 to 8 July 1989. He was the first democratically elected president after the 7-years National Reorganization Process. Ideologically, he identified as a radical and a social democrat, serving as the leader of the Radical Civic Union from 1983 to 1991, 1993 to 1995, 1999 to 2001, with his political approach being known as "Alfonsinism".
Born in Chascomús, Buenos Aires Province, Alfonsín began his studies of law at the National University of La Plata and was a graduate of the University of Buenos Aires. He was affiliated with the Radical Civic Union (UCR), joining the faction of Ricardo Balbín after the party split. He was elected a deputy in the legislature of the Buenos Aires province in 1958, during the presidency of Arturo Frondizi, and a national deputy during the presidency of Arturo Umberto Illia. He opposed both sides of the Dirty War, and several times filed a writ of Habeas corpus, requesting the freedom of victims of forced disappearances, during the National Reorganization Process. He denounced the crimes of the military dictatorships of other countries and opposed the actions of both sides in the Falklands War as well. He became the leader of the UCR after Balbín's death and was the Radical candidate for the presidency in the 1983 elections, which he won.
After becoming president, Alfonsín sent a bill to Congress to revoke the self-amnesty law established by the military. He established the National Commission on the Disappearance of Persons to investigate the crimes committed by the military, which led to the Trial of the Juntas and resulted in the sentencing of the heads of the former regime. Discontent within the military led to the mutinies of the Carapintadas, leading him to appease them with the full stop law and the law of Due Obedience. He also had conflicts with the unions, which were controlled by the opposing Justicialist Party. He resolved the Beagle conflict, increased trade with Brazil, and proposed the creation of the Contadora support group to mediate between the United States and Nicaragua. He passed the first divorce law of Argentina. He initiated the Austral plan to improve the national economy, but that plan, as well as the Spring plan, failed. The resulting hyperinflation and riots led to his party's defeat in the 1989 presidential elections, which was won by Peronist Carlos Menem.
Alfonsín continued as the leader of the UCR and opposed the presidency of Carlos Menem. He initiated the Pact of Olivos with Menem to negotiate the terms for the 1994 amendment of the Argentine Constitution. Fernando de la Rúa led a faction of the UCR that opposed the pact, and eventually became president in 1999. Following de la Rúa's resignation during the December 2001 riots, Alfonsín's faction provided the support needed for the Peronist Eduardo Duhalde to be appointed president by the Congress. He died of lung cancer on 31 March 2009, at the age of 82, and was given a large state funeral.

Juan Domingo Perón (UK: , US: , Spanish: [ˈxwan doˈmiŋɡo peˈɾon] ; 8 October 1895 – 1 July 1974) was an Argentine Army lieutenant general and politician who served as the 35th President of Argentina from 1946 to his overthrow in 1955, and again as the 45th President from October 1973 to his death in July 1974. He had previously served in several government positions, including Minister of Labour and Vice President under presidents Pedro Pablo Ramírez and Edelmiro Farrell.
During his first presidential term (1946–1952), Perón was supported by his second wife, Eva Duarte ("Evita"); they were immensely popular among the Argentine working class. Perón's government invested heavily in public works, expanded social welfare, and forced employers to improve working conditions. Trade unions grew rapidly with his support and women's suffrage was granted with Eva's influence. His government was also known to employ dictatorial tactics; several dissidents were fired, exiled, or arrested, and much of the press was closely controlled. Several high-profile fascist war criminals, such as Josef Mengele, Adolf Eichmann, and Ante Pavelić, were given refuge in Argentina during this time.
Perón was re-elected by a fairly wide margin, though his second term (1952–1955) was far more troubled. Eva, a major source of support, died a month after his inauguration in 1952. An economic crisis was ongoing, Perón was accused of having a relationship with a teenage girl, Nelly Rivas, and his plans to legalise divorce and prostitution damaged his standing with the Catholic Church. After he deported two Catholic priests and was mistakenly thought to be excommunicated, pro-Church elements of the Argentine Navy and Air Force bombed Plaza de Mayo in Buenos Aires, where supporters of Perón had gathered, in June 1955. More than 300 civilians were killed in this coup attempt, which in turn prompted violent reprisals against many churches by Perón's supporters. Within months, a successful coup deposed him.
During the following period of two military dictatorships, interrupted by two civilian governments, the Peronist party was outlawed and Perón was exiled. Over the years he lived in Paraguay, Venezuela, Panama, and Spain. When the Peronist Héctor José Cámpora was elected President in 1973, Perón returned to Argentina amidst the Ezeiza massacre and was soon after elected President for a third time (12 October 1973 – 1 July 1974). During this term, left- and right-wing Peronists were permanently divided and violence between them erupted, with Perón increasingly siding with the right. His minister José López Rega formed the Argentine Anticommunist Alliance, believed to have committed at least hundreds of extrajudicial killings and kidnappings. Perón's third wife, María Estela Martínez, known as Isabel Perón, was elected as Vice President on his ticket and succeeded him as President upon his death in 1974. Political violence only intensified, and she was ousted in 1976, followed by a period of even deadlier repression under the junta of Jorge Rafael Videla.
Although they are still controversial figures, Juan and Eva Perón are nonetheless considered icons by the Peronists. The Peróns' followers praised their efforts to eliminate poverty and to dignify labour, while their detractors considered them demagogues and dictators. The Peróns gave their name to the political movement known as Peronism, which in present-day Argentina is represented mainly by the Justicialist Party.