THE United Nations expressed concern about a request for a fatwa seeking the assassination of its head in Sudan, as loyalists of ousted leader Omar al-Bashir stepped up opposition to a draft deal for a new civilian government. In a video on social media, a man calling himself only Abdelmoneim is seen speaking to a gathering in Khartoum that included pro-Bashir politicians seeking inclusion in the deal. "I volunteer to assassinate Volker, and I request a fatwa (religious legal opinion) to make his blood permissible," the man said, referring to U.N. envoy Volker Perthes. Government sources said an investigation had…