Christian Horner, the longest-tenured team principal in Formula 1, is out after two decades. Here's what he told the team.

Power struggles, an investigation and a declining car eroded support for the only team principal Red Bull has ever known

Red Bull‘s termination of Christian Horner has sent shockwaves throughout the world of Formula One. A formidable presence in the sport, Horner had helmed Red Bull Racing throughout its rise and dominance.