Question: Who was President of Argentina when César Augusto Guzzetti became the first foreign minister of the military government?
Context: César Augusto Guzzetti (1925 – 1988) was an officer in the Argentine Navy who rose the rank of vice admiral.  After the 1976 coup d'état that overthrew the government of Isabel Perón, Guzzetti became the first foreign minister of the military government presided by Lieutenant General Jorge Rafael Videla. Guillermo Tell Villegas (1823 in Valencia, Venezuela – 21 March 1907 in Valencia) was a Venezuelan politician, lawyer, and writer.  Among other government positions, he served as interim President of Venezuela in 1868, 1870 and 1892.  Starting his career in law, he became governor of Barinas in 1859 and afterwards held various roles in the government of Juan Crisostomo Falcon, including deputy in the Assembly of Victory, Minister of Interior and Justice, and interim Foreign Minister of Venezuela.  In 1864 and in 1866 was appointed to the Federal High Court.  Villegas participated in the revolution in 1867, and was elected president of the Chamber of Deputies in 1868, where he openly opposed the government of Falcón.  The Blue Revolution in 1868 removed Falcon from power, and Villegas became Foreign Minister under President José Ruperto Monagas.  In 1868 Villegas spent eight months as interim President of Venezuela, during which time he reinstated the Federal Constitution from 1864.  After again serving as interim president and Minister of the Interior in 1969, in 1870 he was interim president a third time while Monagas fought the Liberal Revolution.  The revolution was successful, and Villegas retired from active politics after ceding the presidency. Abdul Rahim Ghafoorzai (d. August 21, 1997) was a politician and diplomat of Afghanistan.  He was an ethnic Pashtun, a member of the Barakzai Mohammadzai tribe.  During the 1970s he entered the Afghan foreign service.  He was sent to the United States to represent the political administration supported by the Soviet Union.  As the Ambassador to the UN, Mr. Ghafoorzai thought it his duty to call on the global partners to denounce the Soviet invasion in 1979.  From then until 1992, he worked as a representative official to trigger international support against the regime that the Soviets had set up in Afghanistan.  When the communist government fell in 1992, Ghafoorzai acted as an intermediary to unite the factions of Afghanistan.  He worked in the United Nations until 1995, and then became deputy foreign minister.  He became foreign minister in July 1996.  in September 1996 the government troops withdrew from Kabul and the Taliban captured Afghanistan's capital, Kabul, The International community did not recognize the Taliban as Afghanistan legitimate government except Pakistan, United Arab Emirates and Saudi Arabia, the Islamic State of Afghanistan government established the new cabinet in Mazar e Sharif in the north of Afghanistan, meanwhile the Afghanistan Embassies and the Permanent Mission of Afghanistan to the United Nations was in control of Islamic State of Afghanistan as legitimate representative of Afghanistan.  Ghafoorzai continued as Afghanistan Foreign Minister until August 11, 1997, just 10 days before his death, he was appointed prime minister of the Islamic State of Afghanistan government.  He was killed in a plane crash in Bamyan Province when he was going to negotiate to form his cabinet with their allies. Mohamed El-Amine Souef (born July 1962) is a Comorian diplomat and former foreign minister, ambassador to Egypt, and Permanent Representative to the Arab League (1995–1998).  He has been appointed deputy Foreign Minister in charge of the Arab World by president Mohamed Taki Abdulkarim in 1998.  He first became foreign minister in 1999, following the military coup of Azali Assoumani.  He resigned briefly in January 2002, along with Azali Assoumani, to make way for a transitional government, but he was reappointed a few months later when Assoumani won elections and regained power.  He lost his post again in July 2005 during a cabinet reshuffle.  After the reshuffle,Mr. Souef was named Ambassador and Permanent Representative of the Comoros to the United Nations in New York (April 2006). Previously, in government, He served as Parliamentarian, Minister of Foreign Affairs and Cooperation, State Minister in charge of Cooperation, Ambassador to Egypt and Permanent Representative to the Arab League States and, Adviser to the President of the Comoros.  Mr. Souef is currently serving DPKO after a long carrier within the Government of the Comoros.In peacekeeping, He is currently Head of the MINUSMA Office in Gao/Mali and had been successively Head of the UNAMID Liaison Office in Khartoum and Head of Office in South and North Darfur (UNAMID)since April 2011.  M.SOUEF is a scholar and an author of five books on politics and geopolitics. Algirdas Saudargas (born April 17, 1948 in Kaunas, Lithuania, is a Lithuanian politician and the signatory of the Act of the Re-Establishment of the State of Lithuania.  He was the first foreign minister of post-Soviet Lithuania.  He was foreign minister from March 24, 1990, to December 12, 1992, and again from December 4, 1996, to October 30, 2000.  In 1992, Algirdas Saudargas, together with 9 other Baltic Ministers of Foreign Affairs and an EU commissioner, founded the Council of the Baltic Sea States (CBSS) and the EuroFaculty. Jorge Salvador Lara (September 4, 1926 – February 8, 2012) was an Ecuadorian politician diplomat, columnist, writer, and historian.  Lara served as the Foreign Minister of Ecuador for two separate tenures.  He first served as Foreign Minister in 1966 within the government of interim President Clemente Yerovi.  Lara again became Foreign Minister from 1976 to 1977 within the military regime of Vice Admiral Alfredo Poveda. Susana Myrta Ruiz Cerutti (born 18 November 1940) is an Argentinian lawyer, diplomat and politician, who occupied the position of Minister of Foreign Affairs and Worship ("canciller") during the presidency of Raúl Alfonsín, from 26 May to 8 July 1989.  This made her the first woman in Argentina's history to reach the post of Foreign Minister.  She previously served as Deputy Foreign Minister from 1987 to 1989, when she became Foreign Minister, and later held other positions in that Ministry.  During her diplomatic career she was also Argentinian Ambassador to Switzerland, Liechtenstein and Canada. The Minister of External Affairs (or simply foreign minister) is the head of the Ministry of External Affairs of the Government of India.  One of the senior-most offices in the Union Cabinet, the chief responsibility of the Foreign Minister is to represent India and its government in the international community.  The foreign minister also plays an important role in determining Indian foreign policy.  Occasionally, the foreign minister is assisted by a Minister of State for External Affairs or the lower-ranked Deputy Minister of External Affairs. María Estela Martínez Cartas de Perón (born 4 February 1931), better known as Isabel Martínez de Perón (] ) or Isabel Perón, served as President of Argentina from 1974 to 1976.  She was the third wife of President Juan Perón.  During her husband's third term as president from 1973 to 1974, Isabel served as both vice president and First Lady.  Following her husband's death in office in 1974, Isabel served as president of Argentina from 1 July 1974 to 24 March 1976.  She holds the distinction of being the first female to have the title of "President" in any country in the world. Louis De Revol (1531 – 24 September 1594) was the first French Foreign Minister from 1589 until his death in 1594.  He is considered world's first foreign minister entrusted with all foreign relations.
Answer: Isabel Martínez de Perón