Who is the new Greek Finance Minister Yanis Varoufakis?

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Greece's new Finance Minister Yanis Varoufakis doesn't wear ties and is known to don leather biker gear: the BBC's Economics Correspondent Andrew Walker profiles the dynamic economist who has taken on the task of cutting a new deal on Greece's debts with fellow EU member countries. Nigerian youth unemployment and falling oil prices are key issues for voters ahead of next week's election. Minister of Finance Ngozi Okonjo-Iweala explains the election will still go ahead despite many polling stations in the north of the country being closed because of the security threat posed by Boko Haram. Should a five year old know what fiscal drag is? Maybe not, but the New York columnist Ron Lieber says children of that age are old enough to learn about financial responsibility. We take a look back at the week's big business stories with Matthew Bishop, US business editor at The Economist magazine, and Anne Bagamery, Senior Editor at the International New York Times in Paris. From Wellington, we are joined by Colin Peacock of Radio New Zealand