By Daniel Moxon The protagonists of the civil war involving Red Bull Racing have taken the first step towards peace for the sake of uniting against their common enemy – Mercedes. The Formula 1 champions are engulfed in a struggle for power with team principal Christian Horner at the centre of the conflict. The 50-year-old, who has led the team since 2005, has been fighting for his job for the last six weeks. It began with a complaint against him by a female colleague which, after an investigation carried out by an external KC, was dismissed by the Red Bull parent company. However, the complain…