Definition: Non-belligerency, also known as non-aggression or non-combatant, is a principle in international law that prohibits states from using armed conflict against each other. This means that a state cannot engage in combat with another state unless it is willing to put an end to the conflict through negotiations and peaceful means. States can only use force if they have been authorized by their own constitutional bodies or if they are engaged in hostilities with another state. This principle was established by the United Nations