BBC
8th September 2010
Former Defence Secretary Des Browne, Zimbabwean Education Minister David Coltart, former UK diplomat Martin Griffiths, and Sir Menzies Campbell MP discuss conflict mediation on the  21 August 2010 in the Scottish Parliament.
The link is:
http://www.bbc.co.uk/iplayer/episode/b00tr62y/The_Festival_of_Politics_2010_Mediating_Conflict/
Regrettably it appears that the link cannot be accessed outside the united Kingdom.