The trial of South Sudan's First Vice President Riek Macharhas reignited concerns about the country's fragile peace and the future of its unity government. Machar, who has been under house arrest since March, made a rare public appearance this week at a special court session in Juba, joined by 20 co-defendants, including Petroleum Minister Puot Kang Chol. He faces serious charges murder, treason, and crimes against humanity linked to violent clashes in Nasir earlier this year involving the Nuer-dominated White Army militia.