America's primary threat is an internal "clash of civilizations" between its polarized political factions, not foreign adversaries. Post-9/11 foreign policy, including preemptive war and democracy promotion, largely failed due to national hubris and unrealistic expectations. The article critiques how Trump, despite opposing "forever wars," resurrected preemptive conflict ideas and exploited "clash of civilizations" rhetoric for personal gain, deepening domestic divisions. This pervasive hubris has also misdirected security agencies. The author concludes that this accelerating internal rupture, exacerbated by leadership, now poses a greater and more immediate risk than external threats.