Christian Horner’s exit after 20 years marks the end of an era at Red Bull, but the problems go deeper. What does this decision solve, and what are the team’s most pressing challenges now and for the long term?

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

Red Bull sacked Christian Horner as chief executive and team principal on Wednesday and former F1 driver Ralf Schumacher believes that Max Verstappen could now quit the team