Toro Rosso team principal Franz Tost is adamant his Formula One team has nothing to apologise for following its spat with engine supplier Renault at the Brazilian Grand Prix.
Red Bull's sister squad issued a statement on Saturday morning in response to comments from Renault chief Cyril Abiteboul, who suggested the series of recent engine troubles Toro Rosso has suffered may be linked to the way the team is running and installing its power unit.
Tost believes Toro Rosso has every right to be angered, claiming Renault started the spat when Abiteboul spoke to the press on Friday.