Noun
The state or habit of not intervening or interfering; as, the nonintervention of one state in the affairs of another.
Source: Webster's dictionaryNonintervention does not mean that nothing happens. It means that something else happens. Christopher Hitchens
Brown, Joseph Severn: A Life, p. 282-83 Although the official position of the British government on "The Roman Question" was neutrality and nonintervention, Severn often took diplomatic action that his superiors viewed as exceeding his mandate as Consul. Source: Internet
Under Calixte the majority of Garde personnel had adhered to the doctrine of political nonintervention that their Marine Corps trainers had stressed. Source: Internet