• Red Bull duo jeered at season launch in London this week
• FIA: ‘It was disappointing to hear the crowd’s reaction’

Formula One’s rulers have condemned the “tribalist” booing of Max Verstappen and Christian Horner at the sport’s season launch in London.

Both world champion Verstappen and his Red Bull team boss Horner were subjected to jeers by some of the 15,000 fans inside the O2 Arena earlier this week. The FIA was also targeted with boos, and on Saturday the sporting federation moved to stand up for the pair.