G20 currency wars

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The BBC's economics correspondent Andrew Walker reports from the Group of Twenty meeting in Seoul, on currency wars and the threat of increasing protectionism. He talks to business leaders from Japan, Argentina, Denmark and India about their hopes and fears. President Obama has called on the G20 to stand firm against protectionism. But are the G20 nations themselves the worst offenders when it comes to protectionist measures? Lesley Curwen talks to Professor Simon Evenett, of St. Gallen University in Switzerland who co-ordinates the Global Trade Alert. He argues that the majority of recent protectionist measures have come from G20 members.