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 team principal Christian Horner has been fired after 20 years with the team, a team spokesperson told CNN Sports on Wednesday.