Watch The War of the World online: Episode 6 The Descent of the West

When the Berlin Wall finally fell, the 20th century seemed to have reached its climax. Optimists believed they were witnessing the final triumph of the West. But Niall Ferguson shows that in the last decades of the 20th century, dark forces of racial violence were still at play. And he analyses whether the century to come will be able to escape the outbreak of a new cataclysmic global war.

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