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 (...)

Petroleo Brasileiro SA (Petrobras): the state-controlled oil producer was at the centre of a corruption investigation. Photograph: Dado Galdieri/Bloomberg

Petrobras chairman Murilo Ferreira is taking a leave of absence less than five months after he was appointed to help the Brazilian government-con(...)

Brazil’s president Dilma Rousseff, who has been struggling with the country’s worst recession in decades. Photograph: Ueslei Marcelino/Reuters

Standard & Poor’s downgraded Brazil’s credit rating to junk on Wednesday in the latest blow to embattled president Dilma Rousseff as she struggles(...)

Brazil’s president Dilma Rousseff stands in a vehicle during a civic-military parade in Brasilia to commemorate Brazil’s Independence Day on Monday.  Photograph: Ueslei Marcelino/Reuters

The depths of the institutional and ethical crisis facing Brazil have been laid bare by a new survey of the country’s congress, which reveals more tha(...)

An inflatable doll depicting former Brazilian president Luiz Inacio Lula da Silva in prison attire during a recent protest against Brazil’s President Dilma Rousseff in São Paulo. photograph: paulo whitaker/reuters

Brazil’s transformation from investment community darling to black sheep gathered pace this week as evidence mounted that the country’s political clas(...)

Eduardo Cunha, president of Brazil’s lower house of parliament, who has been accused of accepting a $5 million  bribe in return for helping a company win contracts to supply  oil giant Petrobras with drill ships. Photograph: Miguel Schincariol/AFP/Getty Images

Brazil’s political crisis has entered a new and more volatile phase with last week’s decision by federal prosecutors to formally charge the powerful p(...)

The Petrobras bribery scandal that has dogged Brazil’s politics for some years shows no sign of flagging. Prosecutors are expected shortly to unveil n(...)

Dilma Rousseff: The president’s  Workers’ Party administration is now engulfed in a huge corruption scandal and struggling to navigate the country’s worst recession in two decades.   Photograph: Jonathan Ernst/Bloomberg

Standing on a corner of São Paulo’s main avenue, holding a banner demanding “Impeachment Already”, Michele Pick and Maria Necela Sampaio were clear ab(...)

Demonstrators hold signs during a protest in Sao Paulo, Brazil, during a protest in Sao Paulo, Brazil, on Sunday. Nationwide street protests against Brazilian president Dilma Rousseff are keeping pressure on the government. Photograph: Patricia Monteiro/Bloomberg 1:27

Hundreds of thousands of demonstrators returned to the streets in dozens of Brazilian cities on Sunday to call for the impeachment of president Dilma(...)

President Dilma Rousseff:  Hundreds of thousands are expected to take to the streets on Sunday  to demand her impeachment. Photograph: Evaristo Sa/AFP/Getty Images

Hundreds of thousands of Brazilians are expected to take to the streets on Sunday in the latest round of the campaign to force President Dilma Rous(...)