Marketplace for Tuesday, May 1, 2012

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President Barack Obama arrived in Afghanistan today to sign an agreement to chart future relations with the country. Treasury Secretary Timothy Geithner is in Beijing, prepping for talks of economics and security on Thursday. A British parliamentary committee says Rupert Murdoch is "not fit to run a major company." Delta Air Lines is buying an oil refinery to make its own fuel. Sound is the latest frontier for brand marketing. And Frontline's Martin Smith reports on the fall of MF Global.