Senator Raimundo Lira, President of the Senate's Impeachment Special Committee against President Dilma Rousseff, attends the report reading session, at the National Congress in Brasilia, on May 4, 2016. An explosive new twist in Brazil's corruption and impeachment crisis has weakened President Dilma Rousseff days before her probable suspension from office -- and strengthened the man likely to replace her. / AFP / EVARISTO SA