For the first time on television, this series tells the true story of Stalin's encounters with the Nazis and then with Churchill and Roosevelt and, consequently, their enormous impact on World War II and, later, the fate of post-war Europe. An enthralling mix of high politics - including the inside story of the Allies' meetings at Tehran, Yalta and Postdam - and the dramatic personal experiences of those who bore the consequences of the decisions made by the powerful. Astonishing dramatic reconstructions carefully sourced from archive material, reveal how the great leaders decided the future shape of the post-war world. These decisions had immediate and often harrowing effects for those on the ground. Their story is told through documentary footage, dramatic reconstructions and illuminating interviews - including contributions from former Soviet secret policemen, Allied seamen who served on the Arctic convoys and Red Army veterans who experienced hand-to-hand fighting on the Eastern Front. Written and produced by award-winning film-maker Laurence Rees (Auschwitz - The Nazis and the 'Final Solution', War of the Century, Nazis - A Warning from History), this series is a compelling new way of understanding the most secret and dramatic events of the Second World War.