Keir Starmer's resignation on the eve of Brexit's tenth anniversary symbolizes the climax of a turbulent decade for the UK. The 2016 vote promised sovereignty and national rebirth under "Take Back Control." Ten years later, while legal autonomy was regained, the outcome remains ambiguous, marked by economic, social, and geopolitical impacts. Starmer's fall reflects the crisis of a nation still searching for its strategic identity in a post-Brexit world.