noun
non-intervention in domestic affairs
A political and diplomatic principle that a nation should not interfere in the internal matters of another sovereign state. Often used in international relations contexts.
国際法では、内政不干渉の原則が尊重されるべきだ。
Under international law, the principle of non-intervention in domestic affairs should be respected.
Citing non-intervention in domestic affairs, that country refused to intervene in the neighboring country's conflict.