At the outbreak of war in 1939, wondering whether Russia would join the fight with the Allies, Sir Winston Churchill famously described this nation as 'a riddle wrapped in a mystery inside an enigma'. These words have almost come to define Britain's view of Russia ever since; an inscrutable power that always plays by its own rules.

Military historian Saul David draws on classic Timewatch documentaries and a wide range of BBC archive to examine how television has portrayed Russia through the years. From our trusted World War II ally to the red oppressor of the Cold War, from a potential free-market friend when Communism crumbled to a new 21st-century foe under Putin, Russia has swung from friend to foe and back again - either way, we find it incredibly hard to understand her.

This programme explores how arguably Britain's most complex international relationship has played out on television.

On June 8th 793 Europe changed, forever. The famous monastery at Lindisfarne on the Northumbrian coast was suddenly attacked and looted by seafaring Scandinavians. The Viking Age had begun.

Professor Alice Roberts examines how dramatically the story of the Vikings has changed on TV since the 1960s. She investigates how our focus has shifted from viewing them as brutal, pagan barbarians to pioneering traders, able to integrate into multiple cultures. We also discover that without their naval technology we would never have heard of the Vikings, how their huge trading empire spread, and their surprising legacy in the modern world