Red Bull Racing seems to be in big problems for next year. Ferrari has refused to supply engines to the Austrian team, as the Italian manufacturer is not willing to help another competitor with a winning engine. According to our German colleague Michael Schmidt from Auto Motor und Sport, this is the final decision of Ferrari and it will not change it's view on that.
Therefor the problems of Red Bull Racing are looking bigger every day, although Scuderia Toro Rosso will get engines from Ferrari for next year, as they don't see the small Italian team as a competitor for winning races or championships.
Bahrain International Circuit - Winter testing