Brazil’s president Dilma Rousseff: said she was “indignant” at the move and said her administration had never practised “illicit acts”. Photograph: Mario Tama/Getty Images

Brazil’s president Dilma Rousseff must face impeachment proceedings in revenge for her party’s decision to back efforts to remove the head of the lowe(...)

Venezuela’s president Nicolás Maduro greets supporters after a meeting in the Petare district of Caracas. Photograph: Carlos Garcia Rawlins/Reuters

Venezuela’s president has hinted that he will not accept the result of crucial mid-term elections being held on Sunday should his Chavista movement l(...)

BTG Pactual investment bank chief executive André Esteves: federal prosecutors have accused him of attempting to obstruct their inquiry into corruption at Petrobras. Photograph: Cassimiro/AFP/Getty Images

Twenty months in and the sprawling investigation into political corruption at Brazilian oil giant Petrobras has lost none of its ability to s(...)

Argentinian president-elect Mauricio Macri. He told his supporters that “change cannot be held up by revenge or score-settling”. Photograph: David Fernandez/EPA

In a historic political shift, Argentina has elected a right-wing politician as president for the first time in its history. Mauricio Macri defeated p(...)

Opposition leader Mauricio Macri during his closing campaign rally in Hamahuaca. He is expected to become the first right-wing politician to be elected Argentina’s president. Photograph: Frente Cambiemos/EPA

Argentina stands on the verge of a seismic political shift this weekend. Opinion polls in the South American country show opposition leader Mauricio M(...)

Mauricio Macri: attempting to become the first right-wing politician to be elected president in Argentina’s history.  Photograph: Patricio Pidal/Bloomberg.

A late surge in support for the right-wing opposition candidate means Argentina’s presidential election will be decided by a first ever run-off bet(...)

Buenos Aires governor and presidential candidate Daniel Scioli and Argentina’s president Cristina Kirchner  at a  meeting with local authorities in Buenos Aires on Tuesday.  Photograph: Eitan Abramovich/AFP/Getty Images

There are several campaigns reaching a crescendo ahead of Sunday’s presidential election in Argentina. The populist Peronist Daniel Scioli is crisscr(...)

Argentina’s Juan Imhoff celebrates scoring their fourth try against Ireland. Photograph: Andrew Boyers/Reuters

Argentina’s elated players had barely left the field on Sunday before Argentine sports daily Olé was issuing orders. “Get back here Diego!” its websit(...)

File photograph of Michael Dwyer. Photograph: PA Wire

For the family of Michael Dwyer, deciding to allow a documentary film crew follow them on their campaign for justice was a heavily fraught decision. T(...)

Brazil’s president Dilma Rousseff: said she would “cut her own flesh” to root out corruption. Photograph: Ueslei Marcelino/Reuters

A Brazilian government shake-up designed to head off efforts to impeach president Dilma Rousseff has been overshadowed by a supreme court ruling that (...)