 After an international outcry, he reversed himself but stated that only units that had undergone "brassage" would be allowed to fight, apparently in the belief that the all-Tutsi CNDP units were more likely to be indiscriminately violent towards the mostly Hutu population of the FDLR heartland.On 28 August 2007, soldiers loyal to Nkunda ambushed pro-Kinshasa soldiers of the Bravo brigade in Rubare.Within days the CNDP-government violence had vastly escalated and the government was carrying out full-scale offensives against the CNDP by 6 September.