Peacekeeping, as defined by the United Nations, is a way to help countries torn by conflict create conditions for sustainable peace. UN peacekeepers—soldiers and military officers, civilian police officers and civilian personnel from many countries—monitor and observe peace processes that emerge in post-conflict situations and assist ex-combatants in implementing the peace agreements they have signed. Such assistance comes in many forms, including confidence-building measures, power-sharing arrangements, electoral support, strengthening the rule of law, and economic and social development. All operations must include the resolution of conflicts through the use of force to be considered valid under the charter of the United Nations.