In November 2012, troops from the M23 rebel group marched into the city of Goma, in the Eastern Democratic Republic of Congo. The UN gave peacekeepers the mandate to take more offensive action to protect civilians. Within weeks the most powerful rebel group in the area had fallen apart and fled the country, and a new, more aggressive model of peacekeeping was ushered in. This model has the potential to shrink the areas where rebel groups like M23 commit violence against civilians.