Civil war: armed conflict occurring within a country or region, typically between government forces and internal opposition groups.
その国は長年にわたる内戦で多くの被害を受けた。
That country suffered great damage from a long-running civil war.
内戦が続く地域では難民問題が深刻化する。
In regions where civil war continues, refugee problems worsen.
歴史的に見て、内戦は国家の分裂や社会的不安定を招くことが多い。
Historically, civil wars often lead to national division and social instability.