What hope is there for the people of South Sudan? HARDtalk’s Stephen Sackur speaks to the head of the United Nations mission in South Sudan, David Shearer. South Sudan's lethal cocktail of civil war, ethnic division, failed governance, widespread hunger and disease threatens millions of lives. It represents a tragic failure on the part of the rulers of Africa's newest country, and on the part of the United Nations mission there which has brought neither peace nor protection.(Photo: David Shearer, Head of the United Nations mission in South Sudan)