non-intervention
noun [ U ] uk/ˌnɒn.ɪn.təˈven.ʃən/ us/ˌnɑː.nɪn.tɚˈven.ʃən/
（尤指对国家间或国家内部事务的）不干涉
the practice of refusing to get involved in a situation, especially in a disagreement between countries or within a country
a policy of non-intervention 不干涉政策