KHARTOUM, Sudan (AFP) — The Sudanese government has declared United Nations envoy Volker Perthes “persona non grata”, the Ministry of Foreign Affairs announced. “The Government of the Republic of Sudan has notified the Secretary-General of the United Nations that it has declared Mr. Volker Perthes … persona non grata as of today,” the ministry said in a statement on Thursday, just weeks after army chief Abdel Fattah al-Burhan accused Perthes of stoking the country’s conflict […]