The gold has been stolen (twice) and bartered, the Ring forged, and its curse unleashed upon the world: Richard Wagner’s Rheingold has been premièred at the Salzburg Easter Festival. Kirill Serebrennikov sets the drama in a post-apocalyptic landscape. Here, Wagner’s characters unleash destructive forces of power, possession and dependency. Kirill Petrenko conducts the Berliner Philharmoniker, and Christian Gerhaher makes his role début as Wotan. Images from the evening…