Carpenter, Ted Galen (1997). The Libertarian Reader. ص. 336–344. Nonintervention is usually defined as either the determination by a nation to refrain from interfering in the affairs of other nations or those of its own political subdivisions; or as the refusal or failure to intervene in same. Non-interventionism is not to be confused with isolationism, a political policy which sometimes carries with it laws that mandate a breaking of ties between the inhabitants of one political subdivision and another.