Francis Fukuyama - Political scientist

Stephen Sackur talks to Francis Fukuyama, one of America's leading political scientists who, 25 years ago, watched the communist bloc unravel and concluded that history had delivered a conclusive verdict - liberal democracy had vanquished its ideological rivals. How wise does that proposition sound today in Ukraine, Syria, China, or even in credit-crunched Greece? Has a quarter century of global tumult changed his mind about the end of history?