For 10 points, name this country, currently led by Cristina Kirchner, whose presidents rule from Buenos Aires.
The Tacuara was a right-wing group that attacked in this country during the presidency of Arturo Frondozi.  The Revolucion Libertadora ended the rule of one man in this country.  The Dirty War in this nation followed a coup that overthrew Isabel Peron and set forth a junta that failed to take the Falkland Islands from Great Britain.  The largest country created out of the Viceroyalty of the Rio de la Plata, its independence was won through victories by Jose de San Martin.  For 10 points, name this country, currently led by Cristina Kirchner, whose presidents rule from Buenos Aires.
The Tacuara was a right-wing group that attacked in this country during the presidency of Arturo Frondozi.  
Republic of {Argentina}