IPA: //ˌnɒnˌɪntəˈvɛnʃən//
KK: /nɑnˌɪntərˈvɛnʃən/
The act of not getting involved in a situation, especially in the political or military affairs of another country.
The country's policy of nonintervention has kept it out of international conflicts.
Nonintervention → It is formed from "non-" (meaning not) and "intervenire" (from Latin, meaning to come between or interfere). The word describes a policy or principle of not interfering or intervening in the affairs of others.
Think of 'not' ('non-') interfering or 'coming between' ('intervenire') in someone else's matters — that's what nonintervention means.