Officials at a Russian university are warning African students of government retribution if they don't sign up to fight in Ukraine, according to a report in The Daily Beast.Three students from Nigeria studying at the Southern Federal University, in Rostov-on-Don near Ukraine's border, told the outlet that university officials had pressured them to take up offers to fight either with the Russian army or the pro-Russian private military contractor the Wagner Group.According to Ukraine's General Staff of the Armed Forces, Rostov-on-Don has become the headquarters of the Wagner Group.On November 14 the Zambian government raised concerns about Lemekhani Nathan Nyirenda, a Zambian national who was reportedly killed while fighting for Russia in Ukraine.It is unclear how he ended up fighting, with the Zambian government asking Russia to "urgently" provide further information."