See also
anti-militarism.The term anti-war sometimes refers to
pacifism, i.e., opposition to all use of military force during conflicts, but most often is used in the context of opposing one particular nation's decision to wage war. Many activists distinguish between anti-war movements and peace movements. Anti-war activists believe that most wars have an aggressor and that their movement works to ensure that the aggressor (whose goals they see as selfish) ends their war.
See more at Wikipedia.org...