Helmut Marko has broken his silence over Red Bull's decision to sack Christian Horner, revealing it was the consequence of "various factors".

With Jos Verstappen back at Spa and Laurent Mekies stepping into his new role, Red Bull is entering a delicate new chapter following Christian Horner’s abrupt dismissal. While the team has remained mostly silent about the decision to axe Horner after two decades and eight world titles,