By 1964 America was deeply embroiled in a conflict in Vietnam that would, over the next decade, claim millions of lives including almost 60,000 US servicemen. But how did the war come about? Who were its major players? Why did the actions and attitudes of US presidents differ? And how did Americans at home shape the outcome of the war. Rob Weinberg asks the big questions to Kevin Ruane, Professor of Modern History at Canterbury Christ Church University.