Cardinal Robert Sarah from Guinea in West Africa has been named among the potential successors to Pope Francis and the prospect is sending a jolt through the French establishment. He has accused the West of betraying its Christian roots and described mass migration as a form of ‘self destruction’. He has spoken of immigration as a ‘new form of slavery’ created by Europe’s failure to defend its identity and has called on young Africans to remain in their own countries and build their futures at home.