On a dramatic day in the Formula 1 paddock, watch how Red Bull's day unfolded as they chased an engine supplier for 2016.
Red Bull have held emergency talks with F1 supremo Bernie Ecclestone amid mounting uncertainty about the team's future in the sport.
As rumours about Red Bull’s F1 future came to the boil on Friday, Sebastian Vettel admitted he wasn't sure what might happen.
The F1 field is set to take a step into the unknown for the second successive race weekend after P2 rain followed P1's diesel spill.
A scathing attack on Formula 1 has been launched by the Speedweek publication which is part of the Red Bull Media House.
Bernie Ecclestone sure F1 will have 22 cars on the grid in 2016, despite Red Bull's struggles to find an engine supplier.
With a storm brewing off the track, heavy rain in Sochi results in just eight drivers setting timed laps
Martin Brundle explains why he feels recovering their relationship with Renault is now Red Bull's only option to remain in F1.
Evaluating what Red Bull’s next move might be after Ferrari joined Mercedes in rejecting their request for 2016 engines.
Ferrari reportedly decide against supplying Red Bull with engines for 2016, leaving the former champions on the verge of quitting F1.
Nico Hulkenberg was fastest in opening practice in Sochi after a diesel spill on track delayed the start.
Jenson Button has no doubts he has made the right decision in staying at McLaren and says "anything is possible" in 2016.
Lewis Hamilton would relish a Bahrain 2014-esque battle with Ferrari's Sebastian Vettel at every race in 2016.
Fernando Alonso has delivered an unequivocal promise he will honour the full term of his three-year deal with McLaren.
Will Stevens is optimistic he will remain in F1 with Manor in 2016 when he expects the team to be much more competitive.
Force India will not run Mercedes' latest-specification engine before the end of the season, Sergio Perez has confirmed.
Red Bull will decide whether or not to stay in F1 by the end of October, owner Dietrich Mateschitz has confirmed.
Fernando Alonso will race with an upgraded Honda engine - but take a penalty - as McLaren's partner spend final four tokens.
The boss of Silverstone has attacked the "criminal" state of F1, describing the sport as "s*** product" which "is not saleable".
Roberto Merhi is back in the second Manor seat for the Russian GP while Alexander Rossi reverts to GP2 as the series resumes.