Christian Horner's dismissal well and truly marks the end of a wildly successful era for Red Bull. Mark Hughes examines how the team started to crumble

From Sebastian Vettel to sexting: the rise and fall of F1's greatest pantomime villain

Christian Horner has been released from his position as Red Bull F1 team principal and will be replaced by Racing Bulls' Laurent Mekies

Last Friday Liberty Media completed its acquisition of MotoGP. What does this mean for the future of motorcycling's biggest championship?