There's been a rare bit of good news in Eastern Congo this month. One of the rebel groups that have terrorized civilians in the mineral rich part of the the Democratic Republic of Congo agreed to end its rebellion. There's still a lot of work to do to disarm the M23 and to keep other rebel movements in check. But this small victory is a boost for U.N. peacekeepers, who are under a new, tougher mandate to protect civilians in the Democratic Republic of Congo. Some experts wonder if this could be a new model for peacekeeping.