Rob Walker's Assignment will be broadcast on the BBC World Service on 4 October 2012.

BBC: On the trail of South Africa's missing textbooks

The BBC's Rob Walker in the Burundi capital, Bujumbura, says the real challenge will come after elections.

BBC: Ballots were colour-coded, black for No, white for Yes

Rob Walker's documentary Snitching in the USA is broadcast on the BBC World Service at 09:05 GMT on 28 March.

BBC: The trouble with using police informants in the US

The Stade Francais number eight is added to Saturday's 22, along with Rob Dewey, Max Evans, Mark Robertson, Nikki Walker, Simon Webster, Kelly Brown, Geoff Cross, Alastair Kellock and Alasdair Strokosch.

BBC: Lineen unhappy with Parks jeering