World's 'Toughest' Sanctions on North Korea

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The 'toughest' sanctions in the world are being imposed on North Korea - but will they make any difference to the country's behaviour? Also, we look at the conflict mineral tantulum, used in cellphones, and how it is linked to corruption in Africa. The death of the man seen as the father of fracking in America - Aubrey McClendon - has sparked questions in the business world. And, a billion dollar settlement has been agreed for the clear-up of an environmental disaster in Brazil. All this with our guests Peter Morici, a professor of international business at Maryland University in Washington and Rosie Blau, China correspondent for The Economist in Beijing. (Photo: North Korea's military anniversary display. Credit: Getty Images)