East African leaders have planned a meeting for next Sunday to discuss the political crisis in Burundi, where a crackdown on protesters has killed at least 20 people. The protests erupted last month over President Pierre Nkurunziza’s bid for a third term in office. On Monday, the president’s opponents boycotted peace talks over the assassination of opposition leader Zedi Feruzi, who was shot dead by unknown gunmen. More than 100,000 people have fled the violence, many pouring into Tanzania, where 3,000 Burundian refugees have now been sickened in a cholera epidemic.