President of Argentina . Having been appointed Interior Minister in 1981 by Leopoldo Galtieri , he briefly served as President of Argentina from 18 June 1982 to 1 July 1982 , during a period of military rule , after Galtieri was ousted from office due to the country 's defeat in the Falklands War .
Having been appointed Interior Minister in 1981 by Leopoldo Galtieri , he briefly served as President of Argentina from 18 June 1982 to 1 July 1982 , during a period of military rule .