THIAM NDIAGA and AARON ROSS TWO years after local emir Djibril Diallo fled his home in northern Burkina Faso following death threats from Islamist militants, he received an unexpected request: to return and take part in peace talks with the same people who wanted him dead. Adama Ouedraogo, deputy mayor of Diallo's hometown of Thiou, called him in January to help negotiate an end to years of attacks by jihadists against local militias and civilians that forced thousands of people to flee the area. "I told them that if everyone was sincere, I could return," said Diallo, a traditional chief…