fault line war
war taking place between two or more identity groups (usually religious or ethnic) from different civilizations
en-GB/ˈfɒlt ˈlaɪn wɔːɹ/
en-US/ˈfɔlt ˈlaɪn ˈwɔɹ/
war taking place between two or more identity groups (usually religious or ethnic) from different civilizations