JP 3-0, page 129

Joint Operations Across the Range of Military Operations V-23 (2) PEO are the application of military force or threat of its use, normally pursuant to international authorization, to compel compliance with resolutions or sanctions designed to maintain or restore peace and order. PEO may include the enforcement of sanctions and exclusion zones, protection of FHA, restoration of order, and forcible separation of belligerent parties or parties to a dispute. Unlike PKO, such operations do not require the consent of the states involved or of other parties to the conflict (e.g., Operations JOINT ENDEAVOR, JOINT GUARD, and JOINT FORGE, 1995-2001 in Bosnia and JOINT GUARDIAN, 1999-2001 in Kosovo). (3) Peace Building. This consists of stability actions (predominantly diplomatic, economic, and security related) that strengthen and rebuild governmental infrastructure and institutions, build confidence, and support economic reconstruction to prevent a return to conflict. Military support to PB may include rebuilding roads, reestablishing or creating government entities, or training defense forces. (4) Peacemaking. This is the process of diplomacy, mediation, negotiation, or other forms of peaceful settlement that arranges an end to a dispute or resolves issues that led to conflict. It can be an ongoing process, supported by military, economic, diplomatic, and informational instruments of national power. The purpose is to instill in the parties an understanding that reconciliation is a better alternative to fighting. The military can assist in establishing incentives, disincentives, and mechanisms that promote reconciliation. Military activities that support PM include military-to-military exchanges and security assistance. US joint forces are often deployed with military forces from other nations to carry out operations and exercises focused on United Nations-mandated ground level peacekeeping tasks.