Building lasting peace in war-torn societies is a daunting challenge for global peace and security. Peacebuilding requires sustained international support for national efforts across the broadest range of activities. For instance, peacebuilders monitor ceasefires, demobilize and reintegrate combatants, assist the return of refugees and displaced persons, help to organize and monitor elections of a new government, support justice and security sector reforms, enhance human rights protections, and foster reconciliation after past atrocities.