Stephen Sackur speaks to Yanis Varoufakis, Greece's radical leftist former finance minister at the height of the economic crisis, now an advocate for a new global progressive politics. The old certainties in European politics are crumbling, where voters seem fed up with the long established supremacy of the parties of centre right and centre left. The politics of identity and raw emotion have fuelled populist insurgencies from Italy to Sweden and eastern Europe, where it is mostly it is the right, rather than the left in the ascendancy. Is he losing the argument in Europe? Show less