On security, Rwanda has enjoyed relative peace and stability in the domestic sphere under the RPF. The regional legacy of the genocide is more mixed. Rwandan armed forces have intervened repeatedly in DR Congo to force Hutu refugees from 1994 to return home and to tackle anti-Tutsi militia, which, though depleted, remain to this day. As well as direct interventions, Rwanda's support for Congolese rebel groups has made it a lynchpin in regional (in)security, but recent events suggest donors are no longer willing to overlook Rwanda's role in the destabilisation of its neighbour. In 2012 many of Rwanda‘s main donor partners cut or suspended aid in response to allegations by a UN Group of Experts that Kigali was aiding the M23 rebel group. The aid cuts seemed to work, with the M23 later defeated by a new UN intervention brigade comprising South African and Tanzanian forces. Interestingly, this new force represents one of the genocide's positive legacies – consisting of African troops with a robust and assertive mandate, able to actively pursue and disarm militias, in sharp contrast to the weak mandates of UN forces who became bystanders to genocide in 1994.