David Beasley: Can the world afford to feed its most vulnerable?

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Sarah Montague speaks to David Beasley, the outgoing head of the World Food Programme. During his tenure, the agency’s budget has more than doubled but the number of those close to famine is growing and conflict is disrupting food supply. How can the world’s most hungry be fed? (Photo: David Beasley, executive director of the World Food Programme appears via videolink on Hardtalk)