In August 1914, the five great powers of Europe declared war on one another. For countries like Britain, Germany and France the significance of the First World War is regularly debated and commemorated. But what of that other great power Russia? It also fought against Germany but by the end of the war, Tsar Nicholas II and his family had been murdered and the Bolshevik Revolution had brought Lenin to power. How far does what was happening in Russia then help explain what is going on today? Zeinab Badawi talks to renowned Russian theatre and film director Andrei Knochalovsky.