Heather Cox Richardson reveals a shocking escalation! U.S.-Iran tensions surge as Defense Secretary Hegseth fired Gen. George and Iran downed a U.S. F-15, exposing Trump’s overstated military dominance. The perils of impulsive leadership are clear; read more here: https://heathercoxrichardson.substack.com/p/april-4-2026 #IranConflict #USForeignPolicy