EUFOR's 1,200-soldier Operation Althea took over from NATO in 2004 to maintain security and oversee the military provisions of a peace agreement that ended the 1992–95 Bosnian war

Efforts by international actors to prevent armed conflict from starting, contain it once underway, and support post-conflict stabilization. Encompasses military deployments, ceasefire monitoring, civilian protection, and political mediation — a central function of multilateral security architecture.