Can the DRC find a path to prosperity? The Democratic Republic of Congo boasts assets that ought to be the envy of Africa – vast productive lands, abundant natural resources and a youthful population. But DRC’s potential remains unfulfilled thanks to political instability, communal violence and corruption. HARDtalk's Stephen Sackur speaks to the country’s Prime Minister Bruno Tshibala – a one-time opponent of President Kabila who now serves him.