The United Nations Security Council has approved a proposal by Secretary General Antonio Guterres to appoint a new envoy to Libya, diplomats said. Al Jazeera reports that Veteran Bulgarian diplomat Nickolay Mladenov will take over from acting Special Representative Steffanie William, in charge of leading negotiations in the war-torn country. The appointments end months of bickering among council members sparked by a US push to split the Libya role, with one person running the UN political mission and another focused on conflict mediation.