Foreign correspondents: James Copnall meets the men now controlling the opposing forces in the battle for South Sudan; Nick Meo hears the concerns surrounding the huge project designed to cover over the radiation threat from the old Chernobyl plant in Ukraine; Humphrey Hawksley examines the working conditions of the brick makers helping to construct India's economic miracle; Matthew Teller relives a historic flight along the River Nile -- it may have taken three months to complete, but those responsible were hailed as heroes and Mary Harper meets the skaters from Somalia taking to the ice and hoping to make their mark at an international tournament in Siberia.