A ceasefire (also known as a truce or armistice), also spelled cease fire (the antonym of 'open fire'), is a stoppage of a war in which each side agrees with the other to suspend aggressive actions, often due to mediation by a third party. Ceasefires may be between state actors or involve non-state actors.' Ceasefires may be declared as part of a formal treaty, but also as part of an informal unde... Wikipedia