text:  It's between the Sudanese Army and a rival paramilitary group, the RSF, and it looks as if the RSF now has the upper hand. This week it seized a city called Sinjar in the southeast of the country, forcing another 50,000 people to flee. Alan Boswell is project director for the Horn of Africa, for the conflict resolution organisation, the International Crisis Group. So, is the RSF winning the war?