In the aftermath of the 2016 elections, an intense and widening divide resurfaced among Americans. While initial fissures in U.S. society revealed themselves over twenty years ago, the split increased into culturally distinct and regionally localized areas during that time. Today, the rift is generally peaceful and manifests itself in words and demonstrations. However, it resides along significant geographic, economic and ideological lines that may not withstand future stress and pressure.
http://nationalinterest.org/feature/the-real-thucydides-trap-will-red-blue-america-go-war-19063