The fighters, some of them drone engineers, had reportedly tried to infiltrate a major city in troubled North Darfur Sudanese troops have killed “a large number” of foreign fighters, including Ukrainian mercenaries, backing the paramilitary Rapid Support Forces (RSF) in the country’s protracted civil war, according to a statement by the Sudanese Armed Forces (SAF) made on Thursday. The killings occurred during clashes with the RSF in the besieged city of El Fasher, the capital of North Darfur,