The Democratic Republic of Congo (DRC) 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. Stephen Sackur speaks to the country's Prime Minister Bruno Tshibala - a one-time opponent of President Kabila who now serves him. Can DRC find a path to prosperity? Show less