HARDtalk - Linda Polman, Journalist and author

International humanitarian assistance is a multibillion dollar enterprise, but is much of the aid doing more harm than good? That is the controversial question raised by Linda Polman, a Dutch writer and journalist who has covered conflict and humanitarian crises from Haiti to Darfur, eastern Congo and Afghanistan. There are situations, she says, in which the best thing the aid givers can do is walk away. HARDtalk asks if that means turning our backs on a world of human suffering. With Stephen Sackur.