In Brazil, President Dilma Rousseff has appointed her predecessor Luiz Inácio Lula da Silva to be her chief of staff, in what she says is an effort to strengthen her government. A judge then released secretly recorded phone calls between Rousseff and Lula da Silva, which members of the opposition say demonstrate the appointment was actually intended to shield Lula da Silva from prosecution on corruption charges. Rousseff is currently facing impeachment proceedings. The political turmoil has sparked massive protests across Brazil.