 Groups of anti @-@ Rwandan government rebels like the FDLR , and other foreign fighters remain inside the DRC . The FDLR which is the greatest concern , was some 6 @,@ 000 strong , in July 2007 . By late 2010 the FDLR 's strength however was estimated at 2 @,@ 500 . The other groups are smaller : the Ugandan Lord 's Resistance Army , the Ugandan rebel group the Allied Democratic Forces in the remote area of Mt Rwenzori , and the Burundian Parti pour la Libération du Peuple Hutu — Forces Nationales de Liberation ( <unk> @-@ FNL ) . 
