Non-interventionism
（重定向自Nonintervention）
Non-interventionism or non-intervention is a foreign policy that holds that political rulers should avoid alliances with other nations but still retain diplomacy and avoid all wars unless related to direct self-defense. An original more formal definition is that non-interventionism is a policy characterized by the absence of interference by a state or states in the external affairs of another state without its consent, or in its internal affairs with or without its consent.